Apri Heri Iswanto^1,2,*, Nabila Nabila¹, Rika Elfina¹, Luthfi Hakim^1,2, Tito Sucipto^1,2, Manggar Arum Aristri³, Muhammad Adly Rahandi Lubis⁴, Widya Fatriasari⁴, Jajang Sutiawan⁴, Atmawi Darwis⁵, Tomasz Rogoziński⁶, Lee Seng Hua⁷, Lum Wei Chen⁸, Petar Antov⁹

Journal of Renewable Materials, Vol.13, No.11, pp. 2253-2279, 2025, DOI:10.32604/jrm.2025.02025-0058 - 24 November 2025

Abstract Indonesia, with its vast forested regions, has experienced significant deforestation, adversely affecting the wood industry. As a result, alternative sources of lignocellulosic biomass are required to mitigate this impact. Among the abundant lignocellulosic raw materials in Indonesia, particularly in Sumatra, bamboo stands out as a promising substitute. Bamboo is a highly versatile resource, suitable for various applications, including its use as a composite raw material to replace traditional wood-based products. This research work aimed to investigate and evaluate the characteristics—morphology, anatomy, physical and mechanical properties, chemical composition, starch content, and natural resistance—of three bamboo species:… More >

Wenny Surya Murtius^1,2,*, Bambang Dwi Argo^3,*, Irnia Nurika¹, Sukardi¹

Journal of Renewable Materials, Vol.13, No.5, pp. 997-1020, 2025, DOI:10.32604/jrm.2025.02024-0004 - 20 May 2025

Abstract A stepwise pretreatment process for coconut dregs (CD) has been investigated to enhance availability of hemicellulose. Recently, lignocellulose-rich agricultural waste such as CD has garnered substantial attention as a sustainable raw material for producing value-added bio-products. To optimize the process variables within the stepwise pretreatment using Pulsed Electric Field (PEF) and Solid-State Fermentation (SSF), Response Surface Methodology (RSM) based on Central Composite Design (CCD) was employed. PEF, a non-thermal physical treatment, offers advantages such as low energy consumption and reduced processing times, while SSF utilizes Pleurotus ostreatus to promote biodegradation. A statistical model was constructed using… More > Graphic Abstract

Prans Brazdausks^*, Maris Puke, Guntis Sosins

Journal of Renewable Materials, Vol.13, No.4, pp. 719-730, 2025, DOI:10.32604/jrm.2025.057944 - 21 April 2025

Abstract Oat husks, a byproduct of oat milling operations with limited economic value, present a promising feedstock for biorefinery processes due to their chemical composition. This study investigates the conversion of C5 carbohydrates in oat husks into furfural through hydrothermal pretreatment using various phosphate-based catalysts, including H₃PO₄, NH₄H₂PO₄, NaH₂PO₄, KH₂PO₄, K₂HPO₄ and K₃PO₄ as catalyst. The catalysts’ effectiveness in promoting furfural production was evaluated under identical hydrothermal conditions (treatment time for 60 min at a constant temperature of 170°C and a catalyst amount). Continuous water steam was used to strip furfural from the reaction zone and minimize its degradation.… More > Graphic Abstract

Blanca Olivia Trejo-Paniagua¹, Nancy Ruiz-Lau^2,*, María Goretty Caamal-Chan³, Rosa Isela Cruz-Rodríguez¹, Anayancy Lam-Gutiérrez⁴, Víctor Manuel Ruíz-Valdiviezo¹

Phyton-International Journal of Experimental Botany, Vol.94, No.3, pp. 861-873, 2025, DOI:10.32604/phyton.2025.062410 - 31 March 2025

Abstract Exogenous proline is an effective agent for increasing plant tolerance to abiotic stress in plants. In this study, we evaluated its effect on seedlings of Siete Caldos chili pepper (Capsicum frutescens), a semi-domesticated variety. The Capsicum genus is known for its sensitivity to water stress. We pretreated the seedlings’ roots by immersing them in proline solutions (0, 2.5, 5, 7.5, and 10 mM) for 48 h. Then, we exposed them to water stress using a Hoagland nutrient solution supplemented with 10% polyethylene glycol (PEG-8000) for nine days. We analyzed key physiological and biochemical parameters, including relative… More >

Guanpeng Huang^1,#, Ti Wu^1,2,#, Yinjie Zheng³, Qiyun Gu², Qiaobin Chen², Shoukai Lin^2,*, Jincheng Wu^2,*

Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2715-2735, 2024, DOI:10.32604/phyton.2024.056484 - 30 November 2024

Abstract Loquat (Eriobotrya japonica Lindl.), a rare fruit native to China, has a long history of cultivation in China. Low temperature is the key factor restricting loquat growth and severely affects yield. Low temperature induces the regeneration and metabolism of reduced glutathione (GSH) to alleviate stress damage via the participation of glutathione S-transferases (GSTs) in plants. In this study, 16 GSTs were identified from the loquat genome according to their protein sequence similarity with Arabidopsis GSTs. On the basis of domain characteristics and phylogenetic analysis of AtGSTs, these EjGSTs can be divided into 4 subclasses: Phi, Theta, Tau… More >

Samar El-Mekkawi¹, Wafaa Abou-Elseoud², Shaimaa Fadel², Enas Hassan², Mohammad Hassan^2,*

Journal of Renewable Materials, Vol.12, No.9, pp. 1573-1591, 2024, DOI:10.32604/jrm.2024.053589 - 25 September 2024

Abstract Recycling of paper sludge waste is crucial for establishing a sustainable green industry. This waste contains valuable sugars that can be converted into important chemicals such as ethanol, poly hydroxybutyrate, and lactic acid. However, the main challenge in obtaining sugars in high yield from paper sludge is the high crystallinity of cellulose, which hinders hydrolysis. To address this, pretreatment using phosphoric acid was optimized using response surface methodology to facilitate cellulose hydrolysis with minimal energy and chemicals. The created prediction model using the response surface method considered factors such as acid concentration (ranging from 60%… More > Graphic Abstract

Jiapeng Wang¹, Bo Zhang^1,*, Haoqiang Cheng¹, Zhixiang Xu²

Journal of Renewable Materials, Vol.11, No.10, pp. 3595-3612, 2023, DOI:10.32604/jrm.2023.030005 - 10 August 2023

Abstract A new method of pretreatment of corn straw with Phanerochaete chrysosporium combined with pyrolysis was proposed to improve the quality of bio-oil. The characterization results demonstrated that microbial pretreatment was an effective method to decrease the lignin, which can achieve a maximum removal rate of 44.19%. Due to the destruction of biomass structure, the content of alkali metal and alkaline earth metal is reduced. Meanwhile, the depolymerized biomass structure created better pyrolysis conditions to promote the pyrolysis efficiency, increase the average decomposition rate of pyrolysis and reduce the residue. In fast pyrolysis, because of the enrichment… More > Graphic Abstract

Qifen Li, Xiaoxiao Yan^*, Yongwen Yang, Liting Zhang, Yuanbo Hou

Journal of Renewable Materials, Vol.11, No.7, pp. 3177-3191, 2023, DOI:10.32604/jrm.2023.027749 - 05 June 2023

Abstract Microbial Electrolytic Cell (MEC) is an electrochemical reaction device that uses electrical energy as an energy input and microorganisms as catalysts to produce fuels and chemicals. The regenerative electrochemical system is a MEC improvement system for methane gas produced by biological carbon sequestration technology using renewable energy sources to provide a voltage environment. In response to the influence of fluctuating disturbances of renewable electricity and the long system start-up time, this paper analyzes the characteristics of two strategies, regulating voltage parameter changes and activated sludge pretreatment, on the methane production efficiency of the renewable gas… More >

Chengxiang Li, Yue Wu, Chunhui Zhang^*, Yao Liu, Qixuan Lin, Junli Ren^*

Journal of Renewable Materials, Vol.11, No.6, pp. 2555-2574, 2023, DOI:10.32604/jrm.2023.026908 - 27 April 2023

Abstract Hemicellulose and lignin are not reasonably utilized during the dissolved pulp preparation process. This work aimed to propose a process for the co-production of dissolving pulp, furfural, and lignin from eucalyptus. High-grade dissolving pulp was prepared from eucalyptus using a combination of extremely low acid (ELA) pretreatment, Kraft cooking, and elementary chlorine-free (ECF) bleaching. The obtained pre-hydrolysate was catalytic conversion into furfural in a biphasic system, and lignin during Kraft cooking and ECF was recovered. The process condition was discussed as well as the mass flow direction. The results showed that ELA pretreatment could effectively… More >

Tanhao Zhang, Shuo Zhang, Wu Lan^*, Fengxia Yue^*

Journal of Renewable Materials, Vol.11, No.2, pp. 555-566, 2023, DOI:10.32604/jrm.2023.025701 - 22 September 2022

Abstract Ferulic acid (FA) and p-coumaric acid (pCA) in bagasse, wheat straw, corn straw, and corncob were extracted by alkaline hydrolysis and characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). It was found that the FA and most of the pCA in gramineous biomass could be dissociated and released after being treated with 1 M NaOH at 100°C for 4 h. The yields of pCA/FA in bagasse, wheat straw, corn straw, and corncob determined by GC-FID are 39.8/11.5, 13.7/11.0, 28.0/11.0, and 35.1/14.5 mg/g, respectively. The raw materials and the treated solid residues were characterized by gel-state… More > Graphic Abstract