Journal of Multidisciplinary Applied Natural Science
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https://doi.org/10.47352/jmans.2774-3047.297
Wahyu Meka
Orchidea Rachmaniah
Berlian Widi Bela Pamungkas
Faisal Akbar
Adidoyo Prakoso
Latifa Hanum Lalasari
Sri Fitria Retnawaty
Shanti Faridah binti Salleh
Salman Masoudi Soltani
Paul Fennell
Microwave-assisted pyrolysis (MAP) was employed to valorise oil palm solid waste, namely empty fruit bunches (EFBs), kernel shells (KSs), and mesocarp fibres (MFs), into liquid smoke at 300 and 400 °C. Unlike conventional pyrolysis systems, which rely on slow, external heating and often yield broad, less selective chemical profiles; MAP offers rapid, volumetric heating and non-thermal effects that enhance product specificity and energy efficiency. This study investigates how MAP temperature and binary blending ratios (EFB-to-KS and EFB-to-MF) influence liquid smoke yield, chemical composition, and antioxidant capacity. Liquid smoke yields were significantly affected by temperature in EFB-KS mixtures, with higher yields at 400 °C, while EFB–MF mixtures showed yield stability across conditions. Gas chromatography–mass spectrometry (GC-MS) analysis revealed phenol as the dominant compound across all samples, with compound diversity and antioxidant activity varying by feedstock. KS-rich mixtures favoured catechol and cresol formation, MF-rich mixtures produced cyclopentenones and carboxylic acids, and EFB-rich mixtures yielded more carbonyl-containing compounds. Antioxidant capacities, measured via DPPH assay, were highest in KS-derived liquid smoke due to its catechol content, while EFB-rich samples exhibited lower activity. Principal component analysis (PCA) was applied to GC-MS data to elucidate the chemical transformation pathways, revealing distinct degradation routes for cellulose, hemicellulose, and lignin under MAP conditions. These routes were further supported by compound clustering in PCA loading plots, highlighting the influence of temperature and biomass composition on product speciation. This study demonstrates the innovative integration of MAP with oil palm waste valorisation, offering a sustainable alternative to wood-based pyrolysis. By tailoring feedstock ratios and operating temperatures, MAP enables the targeted production of high-quality liquid smoke with enhanced antioxidant functionality, contributing to environmentally friendly food preservation and agricultural applications.
[1] J. Trávníček, B. Schlatter, M. Helbing, and H. Willer. (2025). In: "The World of Organic Agriculture. Statistics and Emerging Trends 2025". Research Institute of Organic Agriculture FiBL and IFOAM – Organics International.
[2] J. Kearney. (2010). "Food consumption trends and drivers". Philosophical Transactions of the Royal Society B: Biological Sciences. 365 (1554): 2793-807. 10.1098/rstb.2010.0149.
DOI: https://doi.org/10.1098/rstb.2010.0149[3] P. Bryla. (2016). "Organic food consumption in Poland: Motives and barriers". Appetite. 105 : 737-46. 10.1016/j.appet.2016.07.012.
DOI: https://doi.org/10.1016/j.appet.2016.07.012[4] J. M. Lingbeck, P. Cordero, C. A. O'Bryan, M. G. Johnson, S. C. Ricke, and P. G. Crandall. (2014). "Functionality of liquid smoke as an all-natural antimicrobial in food preservation". Meat Science. 97 (2): 197-206. 10.1016/j.meatsci.2014.02.003.
DOI: https://doi.org/10.1016/j.meatsci.2014.02.003[5] K. Tiilikkala, L. Fagernäs, and J. Tiilikkala. (2010). "History and Use of Wood Pyrolysis Liquids as Biocide and Plant Protection Product". The Open Agriculture Journal. 4 (1): 111-118. 10.2174/1874331501004010111.
DOI: https://doi.org/10.2174/1874331501004010111[6] G. V. Research. (2019). "Liquid Smoke Market Size, Share & Trends Analysis Report by Application (Meat Products, Sauces, Dairy Products, Pet Food), By Region, And Segment Forecasts, 2019 - 2025". Grand View Research.
[7] A. S. Pimenta, T. V. d. C. Monteiro, M. Fasciotti, R. M. Braga, E. C. d. Souza, and K. M. G. d. Lima. (2018). "Fast pyrolysis of trunk wood and stump wood from a Brazilian eucalyptus clone". Industrial Crops and Products. 125 : 630-638. 10.1016/j.indcrop.2018.08.083.
DOI: https://doi.org/10.1016/j.indcrop.2018.08.083[8] S. Czernik and A. V. Bridgwater. (2004). "Overview of Applications of Biomass Fast Pyrolysis Oil". Energy & Fuels. 18 (2): 590-598. 10.1021/ef034067u.
DOI: https://doi.org/10.1021/ef034067u[9] X. Xin, K. Dell, I. A. Udugama, B. R. Young, and S. Baroutian. (2021). "Transforming biomass pyrolysis technologies to produce liquid smoke food flavouring". Journal of Cleaner Production. 294. 10.1016/j.jclepro.2020.125368.
DOI: https://doi.org/10.1016/j.jclepro.2020.125368[10] J. G. Canadell and M. R. Raupach. (2008). "Managing forests for climate change mitigation". Science. 320 (5882): 1456-7. 10.1126/science.1155458.
DOI: https://doi.org/10.1126/science.1155458[11] F. Hua, L. A. Bruijnzeel, P. Meli, P. A. Martin, J. Zhang, S. Nakagawa, X. Miao, W. Wang, C. McEvoy, J. L. Pena-Arancibia, P. H. S. Brancalion, P. Smith, D. P. Edwards, and A. Balmford. (2022). "The biodiversity and ecosystem service contributions and trade-offs of forest restoration approaches". Science. 376 (6595): 839-844. 10.1126/science.abl4649.
DOI: https://doi.org/10.1126/science.abl4649[12] R. Nabila, W. Hidayat, A. Haryanto, U. Hasanudin, D. A. Iryani, S. Lee, S. Kim, S. Kim, D. Chun, H. Choi, H. Im, J. Lim, K. Kim, D. Jun, J. Moon, and J. Yoo. (2023). "Oil palm biomass in Indonesia: Thermochemical upgrading and its utilization". Renewable and Sustainable Energy Reviews. 176. 10.1016/j.rser.2023.113193.
DOI: https://doi.org/10.1016/j.rser.2023.113193[13] E. Hambali and M. Rivai. (2017). "The Potential of Palm Oil Waste Biomass in Indonesia in 2020 and 2030". IOP Conference Series: Earth and Environmental Science. 65. 10.1088/1755-1315/65/1/012050.
DOI: https://doi.org/10.1088/1755-1315/65/1/012050[14] J. A. Garcia-Nunez, M. R. Pelaez-Samaniego, M. E. Garcia-Perez, I. Fonts, J. Abrego, R. J. M. Westerhof, and M. Garcia-Perez. (2017). "Historical Developments of Pyrolysis Reactors: A Review". Energy & Fuels. 31 (6): 5751-5775. 10.1021/acs.energyfuels.7b00641.
DOI: https://doi.org/10.1021/acs.energyfuels.7b00641[15] J. P. Cao, X. B. Xiao, S. Y. Zhang, X. Y. Zhao, K. Sato, Y. Ogawa, X. Y. Wei, and T. Takarada. (2011). "Preparation and characterization of bio-oils from internally circulating fluidized-bed pyrolyses of municipal, livestock, and wood waste". Bioresource Technology. 102 (2): 2009-15. 10.1016/j.biortech.2010.09.057.
DOI: https://doi.org/10.1016/j.biortech.2010.09.057[16] A. M. Eaton, L. D. Smoot, S. C. Hill, and C. N. Eatough. (1999). "Components, formulations, solutions, evaluation, and application of comprehensive combustion models". Progress in Energy and Combustion Science. 25 (4): 387-436. 10.1016/s0360-1285(99)00008-8.
DOI: https://doi.org/10.1016/S0360-1285(99)00008-8[17] K. E. Haque. (1999). "Microwave energy for mineral treatment processes—a brief review". International Journal of Mineral Processing. 57 (1): 1-24. 10.1016/s0301-7516(99)00009-5.
DOI: https://doi.org/10.1016/S0301-7516(99)00009-5[18] N. Bengtsson. (2001). "Development of industrial microwave heating of foods in Europe over the past 30 years". Journal of Microwave Power and Electromagnetic Energy. 36 (4): 227-40. 10.1080/08327823.2001.11688464.
DOI: https://doi.org/10.1080/08327823.2001.11688464[19] D. R. Nhuchhen, M. T. Afzal, T. Dreise, and A. A. Salema. (2018). "Characteristics of biochar and bio-oil produced from wood pellets pyrolysis using a bench scale fixed bed, microwave reactor". Biomass and Bioenergy. 119 : 293-303. 10.1016/j.biombioe.2018.09.035.
DOI: https://doi.org/10.1016/j.biombioe.2018.09.035[20] Z. Yang, H. Lei, Y. Zhang, K. Qian, E. Villota, M. Qian, G. Yadavalli, and H. Sun. (2018). "Production of renewable alkyl-phenols from catalytic pyrolysis of Douglas fir sawdust over biomass-derived activated carbons". Applied Energy. 220 : 426-436. 10.1016/j.apenergy.2018.03.107.
DOI: https://doi.org/10.1016/j.apenergy.2018.03.107[21] A. Al Shra’ah and R. Helleur. (2014). "Microwave pyrolysis of cellulose at low temperature". Journal of Analytical and Applied Pyrolysis. 105 : 91-99. 10.1016/j.jaap.2013.10.007.
DOI: https://doi.org/10.1016/j.jaap.2013.10.007[22] F. P. Bouxin, J. H. Clark, J. Fan, and V. Budarin. (2019). "Combining steam distillation with microwave-assisted pyrolysis to maximise direct production of levoglucosenone from agricultural wastes". Green Chemistry. 21 (6): 1282-1291. 10.1039/c8gc02994f.
DOI: https://doi.org/10.1039/C8GC02994F[23] M. De bruyn, J. Fan, V. L. Budarin, D. J. Macquarrie, L. D. Gomez, R. Simister, T. J. Farmer, W. D. Raverty, S. J. McQueen-Mason, and J. H. Clark. (2016). "A new perspective in bio-refining: levoglucosenone and cleaner lignin from waste biorefinery hydrolysis lignin by selective conversion of residual saccharides". Energy & Environmental Science. 9 (8): 2571-2574. 10.1039/c6ee01352j.
DOI: https://doi.org/10.1039/C6EE01352J[24] S. Gadkari, B. Fidalgo, and S. Gu. (2017). "Numerical investigation of microwave-assisted pyrolysis of lignin". Fuel Processing Technology. 156 : 473-484. 10.1016/j.fuproc.2016.10.012.
DOI: https://doi.org/10.1016/j.fuproc.2016.10.012[25] V. L. Budarin, J. H. Clark, B. A. Lanigan, P. Shuttleworth, and D. J. Macquarrie. (2010). "Microwave assisted decomposition of cellulose: A new thermochemical route for biomass exploitation". Bioresource Technology. 101 (10): 3776-9. 10.1016/j.biortech.2009.12.110.
DOI: https://doi.org/10.1016/j.biortech.2009.12.110[26] Q. Bu, H. Lei, L. Wang, Y. Wei, L. Zhu, X. Zhang, Y. Liu, G. Yadavalli, and J. Tang. (2014). "Bio-based phenols and fuel production from catalytic microwave pyrolysis of lignin by activated carbons". Bioresource Technology. 162 : 142-7. 10.1016/j.biortech.2014.03.103.
DOI: https://doi.org/10.1016/j.biortech.2014.03.103[27] F. Delbecq and C. Len. (2018). "Recent Advances in the Microwave-Assisted Production of Hydroxymethylfurfural by Hydrolysis of Cellulose Derivatives-A Review". Molecules. 23 (8). 10.3390/molecules23081973.
DOI: https://doi.org/10.3390/molecules23081973[28] W. Yunpu, D. A. I. Leilei, F. A. N. Liangliang, S. Shaoqi, L. I. U. Yuhuan, and R. Roger. (2016). "Review of microwave-assisted lignin conversion for renewable fuels and chemicals". Journal of Analytical and Applied Pyrolysis. 119 : 104-113. 10.1016/j.jaap.2016.03.011.
DOI: https://doi.org/10.1016/j.jaap.2016.03.011[29] E. R. Sari. (2018). "Identifikasi Kualitas Biobriket Hasil Pirolisis Limbah Tandan Kosong Kelapa Sawit Dengan Variasi Dimensi". AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian. 4 (1): 146-157. 10.37676/agritepa.v4i1.594.
DOI: https://doi.org/10.37676/agritepa.v4i1.594[30] L. Ni`mah, M. F. Setiawan, and S. P. Prabowo. (2019). "Utilization of Waste Palm Kernel Shells and Empty Palm Oil Bunches as Raw Material Production of Liquid Smoke". IOP Conference Series: Earth and Environmental Science. 366. 10.1088/1755-1315/366/1/012032.
DOI: https://doi.org/10.1088/1755-1315/366/1/012032[31] M. Faisal, A. Gani, F. Mulana, H. Desvita, and S. Kamaruzzaman. (2020). "Effects of Pyrolysis Temperature on the Composition of Liquid Smoke Derived from Oil Palm Empty Fruit Bunches". Rasayan Journal of chemistry. 13 (01): 514-520. 10.31788/rjc.2020.1315507.
DOI: https://doi.org/10.31788/RJC.2020.1315507[32] S. Maulina and E. R. Kamny. (2020). "Quality improvement of smoke liquid from oil palm fronds pyrolysis through adsorption - distillation process by using zeolite as adsorbent". IOP Conference Series: Materials Science and Engineering. 801. 10.1088/1757-899x/801/1/012063.
DOI: https://doi.org/10.1088/1757-899X/801/1/012063[33] Z. A. N. M. Majid, L. Rahmawati, and C. Riyani. (2022). "Identification of bio-oil chemical compounds from pyrolysis process of oil palm empty fruit bunches". IOP Conference Series: Earth and Environmental Science. 1063 (1). 10.1088/1755-1315/1063/1/012001.
DOI: https://doi.org/10.1088/1755-1315/1063/1/012001[34] A. T. Hoang, H. C. Ong, I. M. R. Fattah, C. T. Chong, C. K. Cheng, R. Sakthivel, and Y. S. Ok. (2021). "Progress on the lignocellulosic biomass pyrolysis for biofuel production toward environmental sustainability". Fuel Processing Technology. 223. 10.1016/j.fuproc.2021.106997.
DOI: https://doi.org/10.1016/j.fuproc.2021.106997[35] X. Xin, A. Bissett, J. Wang, A. Gan, K. Dell, and S. Baroutian. (2021). "Production of liquid smoke using fluidised-bed fast pyrolysis and its application to green lipped mussel meat". Food Control. 124. 10.1016/j.foodcont.2021.107874.
DOI: https://doi.org/10.1016/j.foodcont.2021.107874[36] A. V. Bridgwater. (2012). "Review of fast pyrolysis of biomass and product upgrading". Biomass and Bioenergy. 38 : 68-94. 10.1016/j.biombioe.2011.01.048.
DOI: https://doi.org/10.1016/j.biombioe.2011.01.048[37] N. Montazeri, A. C. Oliveira, B. H. Himelbloom, M. B. Leigh, and C. A. Crapo. (2013). "Chemical characterization of commercial liquid smoke products". Food Science & Nutrition. 1 (1): 102-15. 10.1002/fsn3.9.
DOI: https://doi.org/10.1002/fsn3.9[38] F. Xiao, T. Xu, B. Lu, and R. Liu. (2020). "Guidelines for antioxidant assays for food components". Food Frontiers. 1 (1): 60-69. 10.1002/fft2.10.
DOI: https://doi.org/10.1002/fft2.10[39] Y.-M. Kim, T. U. Han, B. Hwang, B. Lee, H. W. Lee, Y.-K. Park, and S. Kim. (2016). "Pyrolysis kinetics and product properties of softwoods, hardwoods, and the nut shell of softwood". Korean Journal of Chemical Engineering. 33 (8): 2350-2358. 10.1007/s11814-016-0142-2.
DOI: https://doi.org/10.1007/s11814-016-0142-2[40] L. P. Santi, D. N. Kalbuadi, and D. H. Goenadi. (2019). "Empty Fruit Bunches as Potential Source for Biosilica Fertilizer for Oil Palm". Journal of Tropical Biodiversity and Biotechnology. 4 (3). 10.22146/jtbb.38749.
DOI: https://doi.org/10.22146/jtbb.38749[41] D. A. C. Manning. (2010). "Mineral sources of potassium for plant nutrition. A review". Agronomy for Sustainable Development. 30 (2): 281-294. 10.1051/agro/2009023.
DOI: https://doi.org/10.1051/agro/2009023[42] S. Patnaik, S. Kumar, and A. K. Panda. (2020). "Thermal degradation of eco-friendly alternative plastics: kinetics and thermodynamics analysis". Environmental Science and Pollution Research. 27 (13): 14991-15000. 10.1007/s11356-020-07919-w.
DOI: https://doi.org/10.1007/s11356-020-07919-w[43] D. Vamvuka, E. Kakaras, E. Kastanaki, and P. Grammelis. (2003). "Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite☆". Fuel. 82 (15-17): 1949-1960. 10.1016/s0016-2361(03)00153-4.
DOI: https://doi.org/10.1016/S0016-2361(03)00153-4[44] F. Surahmanto, H. Saptoadi, H. Sulistyo, and T. A. Rohmat. (2017). "Investigation of the slow pyrolysis kinetics of oil palm solid waste by the distributed activation energy model". Biofuels. 11 (6): 663-670. 10.1080/17597269.2017.1387750.
DOI: https://doi.org/10.1080/17597269.2017.1387750[45] A. A. Salema and F. N. Ani. (2012). "Pyrolysis of oil palm empty fruit bunch biomass pellets using multimode microwave irradiation". Bioresource Technology. 125 : 102-7. 10.1016/j.biortech.2012.08.002.
DOI: https://doi.org/10.1016/j.biortech.2012.08.002[46] J. Akhtar and N. Saidina Amin. (2012). "A review on operating parameters for optimum liquid oil yield in biomass pyrolysis". Renewable and Sustainable Energy Reviews. 16 (7): 5101-5109. 10.1016/j.rser.2012.05.033.
DOI: https://doi.org/10.1016/j.rser.2012.05.033[47] W. A. Khanday, G. Kabir, and B. H. Hameed. (2016). "Catalytic pyrolysis of oil palm mesocarp fibre on a zeolite derived from low-cost oil palm ash". Energy Conversion and Management. 127 : 265-272. 10.1016/j.enconman.2016.08.093.
DOI: https://doi.org/10.1016/j.enconman.2016.08.093[48] G. Kabir, A. T. Mohd Din, and B. H. Hameed. (2017). "Pyrolysis of oil palm mesocarp fiber and palm frond in a slow-heating fixed-bed reactor: A comparative study". Bioresource Technology. 241 : 563-572. 10.1016/j.biortech.2017.05.180.
DOI: https://doi.org/10.1016/j.biortech.2017.05.180[49] H. Yang, R. Yan, H. Chen, D. H. Lee, and C. Zheng. (2007). "Characteristics of hemicellulose, cellulose and lignin pyrolysis". Fuel. 86 (12-13): 1781-1788. 10.1016/j.fuel.2006.12.013.
DOI: https://doi.org/10.1016/j.fuel.2006.12.013[50] J. D. Coral Medina, A. L. Woiciechowski, A. Zandona Filho, L. Bissoqui, M. D. Noseda, L. P. de Souza Vandenberghe, S. F. Zawadzki, and C. R. Soccol. (2016). "Biological activities and thermal behavior of lignin from oil palm empty fruit bunches as potential source of chemicals of added value". Industrial Crops and Products. 94 : 630-637. 10.1016/j.indcrop.2016.09.046.
DOI: https://doi.org/10.1016/j.indcrop.2016.09.046[51] K. Wu, K. Yang, Y. Zhu, B. Luo, C. Chu, M. Li, Y. Zhang, and H. Zhang. (2023). "The co-pyrolysis interactionsof isolated lignins and cellulose by experiments and theoretical calculations". Energy. 263. 10.1016/j.energy.2022.125811.
DOI: https://doi.org/10.1016/j.energy.2022.125811[52] B. Babinszki, E. Jakab, V. Terjék, Z. Sebestyén, G. Várhegyi, Z. May, A. Mahakhant, L. Attanatho, A. Suemanotham, Y. Thanmongkhon, and Z. Czégény. (2021). "Thermal decomposition of biomass wastes derived from palm oil production". Journal of Analytical and Applied Pyrolysis. 155. 10.1016/j.jaap.2021.105069.
DOI: https://doi.org/10.1016/j.jaap.2021.105069[53] J. Alvarez, M. Amutio, G. Lopez, L. Santamaria, J. Bilbao, and M. Olazar. (2019). "Improving bio-oil properties through the fast co-pyrolysis of lignocellulosic biomass and waste tyres". Waste Management. 85 : 385-395. 10.1016/j.wasman.2019.01.003.
DOI: https://doi.org/10.1016/j.wasman.2019.01.003[54] I. de Menezes Nogueira, F. Avelino, D. R. de Oliveira, N. F. Souza, M. F. Rosa, S. E. Mazzetto, and D. Lomonaco. (2019). "Organic solvent fractionation of acetosolv palm oil lignin: The role of its structure on the antioxidant activity". International Journal of Biological Macromolecules. 122 : 1163-1172. 10.1016/j.ijbiomac.2018.09.066.
DOI: https://doi.org/10.1016/j.ijbiomac.2018.09.066[55] H. L. Trajano, N. L. Engle, M. Foston, A. J. Ragauskas, T. J. Tschaplinski, and C. E. Wyman. (2013). "The fate of lignin during hydrothermal pretreatment". Biotechnology for Biofuels. 6 (1): 110. 10.1186/1754-6834-6-110.
DOI: https://doi.org/10.1186/1754-6834-6-110[56] J. S. L. Chang, Y. S. Chan, M. C. Law, and C. P. Leo. (2017). "Comparative microstructure study of oil palm fruit bunch fibre, mesocarp and kernels after microwave pre-treatment". IOP Conference Series: Materials Science and Engineering. 217. 10.1088/1757-899x/217/1/012026.
DOI: https://doi.org/10.1088/1757-899X/217/1/012026[57] N. A. F. Abdul Samad and S. Saleh. (2022). "Analysis of volatile composition released from torrefaction of empty fruit bunch". Materials Today: Proceedings. 57 : 1202-1207. 10.1016/j.matpr.2021.10.462.
DOI: https://doi.org/10.1016/j.matpr.2021.10.462[58] A. Demirbas. (2007). "The influence of temperature on the yields of compounds existing in bio-oils obtained from biomass samples via pyrolysis". Fuel Processing Technology. 88 (6): 591-597. 10.1016/j.fuproc.2007.01.010.
DOI: https://doi.org/10.1016/j.fuproc.2007.01.010[59] S. Konsomboon, S. Pipatmanomai, T. Madhiyanon, and S. Tia. (2011). "Effect of kaolin addition on ash characteristics of palm empty fruit bunch (EFB) upon combustion". Applied Energy. 88 (1): 298-305. 10.1016/j.apenergy.2010.07.008.
DOI: https://doi.org/10.1016/j.apenergy.2010.07.008[60] R. J. Evans and T. A. Milne. (2002). "Molecular characterization of the pyrolysis of biomass". Energy & Fuels. 1 (2): 123-137. 10.1021/ef00002a001.
DOI: https://doi.org/10.1021/ef00002a001[61] Z. Gao, N. Li, S. Yin, and W. Yi. (2019). "Pyrolysis behavior of cellulose in a fixed bed reactor: Residue evolution and effects of parameters on products distribution and bio-oil composition". Energy. 175 : 1067-1074. 10.1016/j.energy.2019.03.094.
DOI: https://doi.org/10.1016/j.energy.2019.03.094[62] R. S. Assary and L. A. Curtiss. (2011). "Thermochemistry and Reaction Barriers for the Formation of Levoglucosenone from Cellobiose". ChemCatChem. 4 (2): 200-205. 10.1002/cctc.201100280.
DOI: https://doi.org/10.1002/cctc.201100280[63] H. B. Mayes, M. W. Nolte, G. T. Beckham, B. H. Shanks, and L. J. Broadbelt. (2014). "The Alpha–Bet(a) of Glucose Pyrolysis: Computational and Experimental Investigations of 5-Hydroxymethylfurfural and Levoglucosan Formation Reveal Implications for Cellulose Pyrolysis". ACS Sustainable Chemistry & Engineering. 2 (6): 1461-1473. 10.1021/sc500113m.
DOI: https://doi.org/10.1021/sc500113m[64] Q. Lu, H.-t. Liao, Y. Zhang, J.-j. Zhang, and C.-q. Dong. (2013). "Reaction mechanism of low-temperature fast pyrolysis of fructose to produce 5-hydroxymethyl furfural". Journal of Fuel Chemistry and Technology. 41 (9): 1070-1076. 10.1016/s1872-5813(13)60044-4.
DOI: https://doi.org/10.1016/S1872-5813(13)60044-4[65] B. Hu, Q. Lu, X. Jiang, X. Dong, M. Cui, C. Dong, and Y. Yang. (2018). "Pyrolysis mechanism of glucose and mannose: The formation of 5-hydroxymethyl furfural and furfural". Journal of Energy Chemistry. 27 (2): 486-501. 10.1016/j.jechem.2017.11.013.
DOI: https://doi.org/10.1016/j.jechem.2017.11.013[66] D. K. Shen and S. Gu. (2009). "The mechanism for thermal decomposition of cellulose and its main products". Bioresource Technology. 100 (24): 6496-504. 10.1016/j.biortech.2009.06.095.
DOI: https://doi.org/10.1016/j.biortech.2009.06.095[67] Y. Zhang, C. Liu, and H. Xie. (2014). "Mechanism studies on β-d-glucopyranose pyrolysis by density functional theory methods". Journal of Analytical and Applied Pyrolysis. 105 : 23-34. 10.1016/j.jaap.2013.09.016.
DOI: https://doi.org/10.1016/j.jaap.2013.09.016[68] I. Polaert, L. Estel, R. Huyghe, and M. Thomas. (2010). "Adsorbents regeneration under microwave irradiation for dehydration and volatile organic compounds gas treatment". Chemical Engineering Journal. 162 (3): 941-948. 10.1016/j.cej.2010.06.047.
DOI: https://doi.org/10.1016/j.cej.2010.06.047[69] D. K. Shen, S. Gu, and A. V. Bridgwater. (2010). "Study on the pyrolytic behaviour of xylan-based hemicellulose using TG–FTIR and Py–GC–FTIR". Journal of Analytical and Applied Pyrolysis. 87 (2): 199-206. 10.1016/j.jaap.2009.12.001.
DOI: https://doi.org/10.1016/j.jaap.2009.12.001[70] J. Y. Yeo, B. L. F. Chin, J. K. Tan, and Y. S. Loh. (2019). "Comparative studies on the pyrolysis of cellulose, hemicellulose, and lignin based on combined kinetics". Journal of the Energy Institute. 92 (1): 27-37. 10.1016/j.joei.2017.12.003.
DOI: https://doi.org/10.1016/j.joei.2017.12.003[71] M. De Bruyn, V. L. Budarin, G. S. J. Sturm, G. D. Stefanidis, M. Radoiu, A. Stankiewicz, and D. J. Macquarrie. (2017). "Subtle Microwave-Induced Overheating Effects in an Industrial Demethylation Reaction and Their Direct Use in the Development of an Innovative Microwave Reactor". Journal of the American Chemical Society. 139 (15): 5431-5436. 10.1021/jacs.7b00689.
DOI: https://doi.org/10.1021/jacs.7b00689[72] M. R. Crimmin. (2021). "Benzene rings broken for chemical synthesis". Nature. 597 (7874): 33-34. 10.1038/d41586-021-02322-y.
DOI: https://doi.org/10.1038/d41586-021-02322-y[73] K. B. Ansari, J. S. Arora, J. W. Chew, P. J. Dauenhauer, and S. H. Mushrif. (2019). "Fast Pyrolysis of Cellulose, Hemicellulose, and Lignin: Effect of Operating Temperature on Bio-oil Yield and Composition and Insights into the Intrinsic Pyrolysis Chemistry". Industrial & Engineering Chemistry Research. 58 (35): 15838-15852. 10.1021/acs.iecr.9b00920.
DOI: https://doi.org/10.1021/acs.iecr.9b00920[74] L. T. Cureton, E. Napadensky, C. Annunziato, and J. J. La Scala. (2017). "The effect of furan molecular units on the glass transition and thermal degradation temperatures of polyamides". Journal of Applied Polymer Science. 134 (46). 10.1002/app.45514.
DOI: https://doi.org/10.1002/app.45514[75] S. Wang, Y. Hu, B. B. Uzoejinwa, B. Cao, Z. He, Q. Wang, and S. Xu. (2017). "Pyrolysis mechanisms of typical seaweed polysaccharides". Journal of Analytical and Applied Pyrolysis. 124 : 373-383. 10.1016/j.jaap.2016.12.005.
DOI: https://doi.org/10.1016/j.jaap.2016.12.005[76] M. Kröger, F. Hartmann, and M. Klemm. (2013). "Hydrothermal Treatment of Carboxy‐methyl Cellulose Salt: Formation and Decomposition of Furans, Pentenes and Benzenes". Chemical Engineering & Technology. 36 (2): 287-294. 10.1002/ceat.201200468.
DOI: https://doi.org/10.1002/ceat.201200468[77] B. C. Hong, N. S. Dange, C. S. Hsu, and J. H. Liao. (2010). "Sequential organocatalytic Stetter and Michael-Aldol condensation reaction: asymmetric synthesis of fully substituted cyclopentenes via a [1 + 2 + 2] annulation strategy". Organic Letters. 12 (21): 4812-5. 10.1021/ol101969t.
DOI: https://doi.org/10.1021/ol101969t[78] D. K. Shen, S. Gu, K. H. Luo, S. R. Wang, and M. X. Fang. (2010). "The pyrolytic degradation of wood-derived lignin from pulping process". Bioresource Technology. 101 (15): 6136-46. 10.1016/j.biortech.2010.02.078.
DOI: https://doi.org/10.1016/j.biortech.2010.02.078[79] K. M. Sabil, M. A. Aziz, B. Lal, and Y. Uemura. (2013). "Effects of torrefaction on the physiochemical properties of oil palm empty fruit bunches, mesocarp fiber and kernel shell". Biomass and Bioenergy. 56 : 351-360. 10.1016/j.biombioe.2013.05.015.
DOI: https://doi.org/10.1016/j.biombioe.2013.05.015[80] C. O. Edmund, M. S. Christopher, and D. K. Pascal. (2014). "Characterization of palm kernel shell for materials reinforcement and water treatment". Journal of Chemical Engineering and Materials Science. 5 (1): 1-6. 10.5897/jcems2014.0172.
DOI: https://doi.org/10.5897/JCEMS2014.0172[81] K. C. Jun, A. A. Abdul Raman, and A. Buthiyappan. (2020). "Treatment of oil refinery effluent using bio-adsorbent developed from activated palm kernel shell and zeolite". RSC Advances. 10 (40): 24079-24094. 10.1039/d0ra03307c.
DOI: https://doi.org/10.1039/D0RA03307C[82] A. E. Harman-Ware, T. Morgan, M. Wilson, M. Crocker, J. Zhang, K. Liu, J. Stork, and S. Debolt. (2013). "Microalgae as a renewable fuel source: Fast pyrolysis of Scenedesmus sp". Renewable Energy. 60 : 625-632. 10.1016/j.renene.2013.06.016.
DOI: https://doi.org/10.1016/j.renene.2013.06.016[83] Z. Yao, X. Ma, and Z. Xiao. (2020). "The effect of two pretreatment levels on the pyrolysis characteristics of water hyacinth". Renewable Energy. 151 : 514-527. 10.1016/j.renene.2019.11.046.
DOI: https://doi.org/10.1016/j.renene.2019.11.046[84] H. Loei, J. Lim, M. Tan, T. K. Lim, Q. S. Lin, F. T. Chew, H. Kulaveerasingam, and M. C. Chung. (2013). "Proteomic analysis of the oil palm fruit mesocarp reveals elevated oxidative phosphorylation activity is critical for increased storage oil production". Journal of Proteome Research. 12 (11): 5096-109. 10.1021/pr400606h.
DOI: https://doi.org/10.1021/pr400606h[85] H. Kawamoto. (2017). "Lignin pyrolysis reactions". Journal of Wood Science. 63 (2): 117-132. 10.1007/s10086-016-1606-z.
DOI: https://doi.org/10.1007/s10086-016-1606-z[86] H. Baseri, S. K. Hosseinihashemi, S. K. Hosseinashrafi, and J. J. Mehjabin. (2025). "Potential Antioxidants in Bio-oil Obtained by Pyrolysis of Yew (Taxus baccata L.) Tree Bark". Drvna industrija. 76 (2): 201-211. 10.5552/drvind.2025.0233.
DOI: https://doi.org/10.5552/drvind.2025.0233[87] I. A. Dias, R. P. Horta, M. Matos, C. V. Helm, W. L. E. Magalhães, E. A. de Lima, B. J. G. da Silva, G. I. B. de Muniz, and P. H. G. de Cademartori. (2023). "Exploring the antioxidant and antimicrobial properties of the water-soluble fraction derived from pyrolytic lignin separation in fast-pyrolysis bio-oil". Biomass Conversion and Biorefinery. 14 (19): 24333-24344. 10.1007/s13399-023-04561-7.
DOI: https://doi.org/10.1007/s13399-023-04561-7[88] D. Yin, R. Xue, Y. Li, M. Zhu, and D. Li. (2023). "Valorization of Coptis chinensis extraction residue via slow pyrolysis for the production of bioactive wood vinegar". Biomass Conversion and Biorefinery. 14 (14): 16559-16574. 10.1007/s13399-023-03890-x.
DOI: https://doi.org/10.1007/s13399-023-03890-x[89] R. H. Rosenwald, J. R. Hoatson, and J. A. Chenicek. (2002). "Alkyl Phenols as Antioxidants". Industrial & Engineering Chemistry. 42 (1): 162-165. 10.1021/ie50481a042.
DOI: https://doi.org/10.1021/ie50481a042[90] J. Chen, J. Yang, L. Ma, J. Li, N. Shahzad, and C. K. Kim. (2020). "Structure-antioxidant activity relationship of methoxy, phenolic hydroxyl, and carboxylic acid groups of phenolic acids". Scientific Reports. 10 (1): 2611. 10.1038/s41598-020-59451-z.
DOI: https://doi.org/10.1038/s41598-020-59451-z[91] A. Loo, K. Jain, and I. Darah. (2008). "Antioxidant activity of compounds isolated from the pyroligneous acid, Rhizophora apiculata". Food Chemistry. 107 (3): 1151-1160. 10.1016/j.foodchem.2007.09.044.
DOI: https://doi.org/10.1016/j.foodchem.2007.09.044[92] L. R. C. Barclay, C. E. Edwards, and M. R. Vinqvist. (1999). "Media Effects on Antioxidant Activities of Phenols and Catechols". Journal of the American Chemical Society. 121 (26): 6226-6231. 10.1021/ja990878u.
DOI: https://doi.org/10.1021/ja990878u[93] A. S. Alwehaibi, D. J. Macquarrie, and M. S. Stark. (2016). "Effect of spruce-derived phenolics extracted using microwave enhanced pyrolysis on the oxidative stability of biodiesel". Green Chemistry. 18 (9): 2762-2774. 10.1039/c5gc02520f.
DOI: https://doi.org/10.1039/C5GC02520F[94] E. B. Hassan, E. M. El-Giar, and P. Steele. (2016). "Evaluation of the antioxidant activities of different bio-oils and their phenolic distilled fractions for wood preservation". International Biodeterioration & Biodegradation. 110 : 121-128. 10.1016/j.ibiod.2016.03.015.
DOI: https://doi.org/10.1016/j.ibiod.2016.03.015[95] Y. Ohkatsu and F. Suzuki. (2011). "Synergism between Phenolic Antioxidants in Autoxidation". Journal of the Japan Petroleum Institute. 54 (1): 22-29. 10.1627/jpi.54.22.
DOI: https://doi.org/10.1627/jpi.54.22[96] J. Gierer and T. Reitberger. (1992). "The Reactions of Hydroxyl Radicals with Aromatic Rings in Lignins, Studied with Creosol and 4-Methylveratrol". Holzforschung. 46 (6): 495-504. 10.1515/hfsg.1992.46.6.495.
DOI: https://doi.org/10.1515/hfsg.1992.46.6.495[97] P. Xue, M. Liu, H. Yang, H. Zhang, Y. Chen, Q. Hu, S. Zhang, and H. Chen. (2023). "Mechanism study on pyrolysis interaction between cellulose, hemicellulose, and lignin based on photoionization time-of-flight mass spectrometer (PI-TOF-MS) analysis". Fuel. 338. 10.1016/j.fuel.2022.127276.
DOI: https://doi.org/10.1016/j.fuel.2022.127276[98] D. Chen, K. Cen, X. Zhuang, Z. Gan, J. Zhou, Y. Zhang, and H. Zhang. (2022). "Insight into biomass pyrolysis mechanism based on cellulose, hemicellulose, and lignin: Evolution of volatiles and kinetics, elucidation of reaction pathways, and characterization of gas, biochar and bio‐oil". Combustion and Flame. 242. 10.1016/j.combustflame.2022.112142.
DOI: https://doi.org/10.1016/j.combustflame.2022.112142[99] F.-X. Collard and J. Blin. (2014). "A review on pyrolysis of biomass constituents: Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin". Renewable and Sustainable Energy Reviews. 38 : 594-608. 10.1016/j.rser.2014.06.013.
DOI: https://doi.org/10.1016/j.rser.2014.06.013[100] M. Asmadi, H. Kawamoto, and S. Saka. (2011). "Thermal reactions of guaiacol and syringol as lignin model aromatic nuclei". Journal of Analytical and Applied Pyrolysis. 92 (1): 88-98. 10.1016/j.jaap.2011.04.011.
DOI: https://doi.org/10.1016/j.jaap.2011.04.011[101] G. Song, D. Huang, Q. Ren, S. Hu, J. Xu, K. Xu, L. Jiang, Y. Wang, S. Su, and J. Xiang. (2024). "Inner-particle reaction mechanism of cellulose, hemicellulose and lignin during photo-thermal pyrolysis process: Evolution characteristics of free radicals". Energy. 297. 10.1016/j.energy.2024.131201.
DOI: https://doi.org/10.1016/j.energy.2024.131201[102] N. M. Salleh, S. A. Ismail, and M. N. Ibrahim. (2015). "Radical scavenging activity of lignin extracted from oil palm empty fruit bunch and its effect on glutathione-S-transferase enzymes activity". Asian Journal of Pharmaceutical and Clinical Research. 8 (3): 81-7.
[103] J. M. L. Thoe, N. Surugau, and H. L. H. Chong. (2019). "Application of oil palm empty fruit bunch as adsorbent: A review". Transactions on Science and Technology. 6 (1): 9-26.
[104] R. Ahorsu, F. Medina, and M. Constantí. (2018). "Significance and Challenges of Biomass as a Suitable Feedstock for Bioenergy and Biochemical Production: A Review". Energies. 11 (12). 10.3390/en11123366.
DOI: https://doi.org/10.3390/en11123366[105] J. M. Bermúdez, D. Beneroso, N. Rey-Raap, A. Arenillas, and J. A. Menéndez. (2015). "Energy consumption estimation in the scaling-up of microwave heating processes". Chemical Engineering and Processing: Process Intensification. 95 : 1-8. 10.1016/j.cep.2015.05.001.
DOI: https://doi.org/10.1016/j.cep.2015.05.001[106] S. Mari Selvam, P. Balasubramanian, M. Chintala, and L. K. S. Gujjala. (2024). "Techno-economic analysis of microwave pyrolysis of sugarcane bagasse biochar production". Biomass Conversion and Biorefinery. 15 (9): 14229-14239. 10.1007/s13399-024-06232-7.
DOI: https://doi.org/10.1007/s13399-024-06232-7[107] D. C. Makepa, C. H. Chihobo, W. R. Ruziwa, and D. Musademba. (2023). "Microwave-assisted pyrolysis of pine sawdust: Process modelling, performance optimization and economic evaluation for bioenergy recovery". Heliyon. 9 (3): e14688. 10.1016/j.heliyon.2023.e14688.
DOI: https://doi.org/10.1016/j.heliyon.2023.e14688[108] I. Fonts, C. Lazaro, A. Cornejo, J. L. Sanchez, Z. Afailal, N. Gil-Lalaguna, and J. M. Arauzo. (2024). "Bio-oil Fractionation According to Polarity and Molecular Size: Characterization and Application as Antioxidants". Energy Fuels. 38 (19): 18688-18704. 10.1021/acs.energyfuels.4c02641.
DOI: https://doi.org/10.1021/acs.energyfuels.4c02641