Article
Agricultural Engineering
Xinyuan Zhang, Yiqin Wang, Jie Lu, Miaomiao Liu, Wanting Tan, Yi Cheng, Yehan Tao, Jian Du, Haisong Wang
Summary: This paper used five different types of biosurfactants to enhance the saccharification efficiency in the enzymatic hydrolysis process. The addition of sophorolipid increased the enzymatic hydrolysis efficiency by 30.65%, while the combination of sophorolipid and tea saponin further increased the efficiency to 99.56%. These biosurfactants acted synergistically to inhibit enzymatic inactivation and non-productive adsorption of lignin. This study proposes an effective method to improve enzymatic hydrolysis efficiency and reduce enzyme dosage by utilizing biosurfactants.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Chemical
Ekaterina Budenkova, Stanislav Sukhikh, Svetlana Ivanova, Olga Babich, Vyacheslav Dolganyuk, Philippe Michaud, Olga Kriger
Summary: The study investigated enzymatic hydrolysis of cellulose-containing raw materials using Aspergillus niger. Results showed that treated A. niger strains were most effective in hydrolyzing secondary raw materials, with increased cellulase activity under certain conditions. The conversion of cellulose to glucose varied depending on the substrate, with starch-containing materials showing the highest cellulase activity, indicating a potential for amylolytic fermentation by A. niger.
Review
Agricultural Engineering
Jitendra Kumar, Himanshu, Hemansi, Amanjot Kaur, Aayush Mathur
Summary: Global interest in lignocellulosic biorefineries has increased due to sustainable technological advancements. However, enzymatic hydrolysis in biorefinery operations faces challenges that limit cost-effectiveness.
BIORESOURCE TECHNOLOGY
(2022)
Review
Chemistry, Applied
Chaozhong Xu, Shanshan Tong, Liqun Sun, Xiaoli Gu
Summary: Cellulase-mediated lignocellulosic biorefinery is crucial for producing high-value biofuels and chemicals, and immobilization of cellulase enzymes has greatly improved the efficiency, stability, and reusability of the process. This comprehensive review analyzes the principles and various approaches of cellulase immobilization, including physical adsorption, covalent binding, entrapment, and cross-linking. It also explores different carrier materials and emerging techniques such as multi-enzyme co-immobilization and 3D printing carriers, while addressing obstacles like diffusion limitations and loss of cellulase activity.
CARBOHYDRATE POLYMERS
(2023)
Review
Agricultural Engineering
David Alexander Mitchell, Isabelle Moreira, Nadia Krieger
Summary: Stochastic models have the potential to be important tools in describing the complex network of reactions involved in enzymatic hydrolysis of polysaccharides, but many current models lack biologically meaningful parameters. Only a few models utilize classical enzyme kinetics parameters, and recent research on stochastic models for cellulose hydrolysis provides valuable insights into the molecular-level phenomenon limiting hydrolysis rates. Further improvements are necessary for stochastic models of enzymatic polysaccharide hydrolysis to become widely used tools for guiding process development.
BIORESOURCE TECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Yufeng Yuan, Bo Jiang, Hui Chen, Wenjuan Wu, Shufang Wu, Yongcan Jin, Huining Xiao
Summary: Enzymatic hydrolysis of lignocellulose for bioethanol production has great potential, but the presence of lignin inhibits the process. Pretreatment methods can remove lignin and improve enzymatic digestibility. Researchers are focusing on exploring the relationship between lignin structure and lignin-enzyme interactions to enhance saccharification efficiency.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Food Science & Technology
Huaixiang Tian, Yao Liu, Li Li, Chen Chen, Haiyan Yu, Xinxin Ma, Juan Huang, Xinman Lou, Haibin Yuan
Summary: In this study, a method combining microwave radiation and cellulase hydrolysis (MCH) was developed to increase the reducing sugar content of soybean residue (SR). The results indicated that the MCH method successfully enhanced the enzymatic hydrolysis of fibrous polysaccharides in SR and increased its reducing sugar content. Moreover, the treated SR effectively promoted the growth of Aspergillus oryzae and elevated protease activity. This study suggests that the MCH method has great potential in improving the fermentation efficiency of SR.
Article
Green & Sustainable Science & Technology
Lan Wang, Yongxin Bu, Lele Sun, Hongzhang Chen
Summary: Combining Fenton reagent with cellulase can improve lignocellulose degradation efficiency and reduce enzyme dosage, thus reducing the production cost of lignocellulosic ethanol.
Article
Agricultural Engineering
Qianqian Yang, Lei Zhang, Zhina Lian, Junhua Zhang
Summary: In this study, lactic acid was used for XOS production from corncob, achieving a XOS yield of 69.9%. Additionally, cellulase hydrolysis of corncob residue resulted in 95.6% glucose and 54.0% xylose. Bacillus subtilis YS01 was successfully cultured using the cellulase hydrolysate, with a viable count of 6.4x10(8) CFU/mL and glucose and xylose utilization rates of 99.0% and 89.8%, respectively.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Xindong Chen, Hailong Li, Shimiao Yao, Can Wang, Xuefang Chen, Haijun Guo, Lian Xiong, Hairong Zhang, Xinde Chen
Summary: This study investigated the impact of cellulose ultrastructure on the inhibition of lignin during enzymatic hydrolysis. It also explored the effects of changing cellulose ultrastructure on cellulose conversion. The results showed that cellulose ultrastructure significantly influenced the degree of lignin inhibition.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Applied
Bin He, Pengbing Chang, Xing Zhu, Sufeng Zhang
Summary: Construction of a biomimetic cellulase-loaded enzymatic film inspired by the sea anemone's predation process can effectively increase the efficiency of insoluble cellulose hydrolysis and enable enzyme recycling. This immobilization system can significantly reduce the cost of cellulose conversion in industrial areas.
CARBOHYDRATE POLYMERS
(2021)
Article
Agricultural Engineering
Peiqian Zhang, Mei Cui, Renliang Huang, Wei Qi, Wim Thielemans, Zhimin He, Rongxin Su
Summary: This study investigated the mechanism of expansins and endoglucanase on cellulose using real-time monitoring technology. The addition of zinc ions was found to increase the adsorption rate and hydrolysis rate of both expansins and endoglucanase.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Qiang Xiong, Jie Qiao, Minghui Wang, Shuang Li, Xiujuan Li
Summary: This study investigated the effects of carboxylated and quaternized lignin (CQL) and hydroxymethylated lignin (HML) on enzymatic hydrolysis efficiency (EHE) of p-toluenesulfonic acid treated corn stover (PCS). The results showed that CQL enhanced EHE by forming CQL-I3-GL complexes with lower binding free energy, while HML decreased EHE due to overlapping binding sites with the carbohydrate binding domain of I3-GL, resulting in decreased enzyme activity. This research helps in understanding the impact of modified lignins on EHE and cellulase adsorption.
BIORESOURCE TECHNOLOGY
(2021)
Article
Food Science & Technology
Linlin Fan, Lili Li, Feifei Shang, Yuhua Xie, Zhenhua Duan, Qianwei Cheng, Yuqiao Zhang
Summary: This study evaluated the efficacy of short-term electron beam irradiation for preventing and controlling Aspergillus flavus contamination. The results showed that irradiation inhibited fungal growth and toxin production, damaged cell structure and antioxidant system. Therefore, electron beam irradiation has great potential for post-harvest control in the agricultural industry.
Article
Polymer Science
Dominika Kulig, Zaneta Krol-Kilinska, Lukasz Bobak, Barbara Zarowska, Andrzej Jarmoluk, Anna Zimoch-Korzycka
Summary: This study aimed to obtain chitooligosaccharides (COS) from chitosan (CH) with improved functional properties. Two different enzymes, commercial cellulase (CL) and the dedicated enzyme chitosanase (CS), were used for comparison. Results showed that the enzymes had different cleavage mechanisms. The fractions LMF and NF had improved solubility compared to HMF and CH samples, and LMF was sensitive to high temperatures. COS were a mixture of oligomers with different degrees of polymerisation. LMF had lower DPPH radical scavenging activity compared to HMF and NF.
Article
Energy & Fuels
E. Betiku, A. S. Osunleke, V. O. Odude, A. Bamimore, B. Oladipo, A. A. Okeleye, N. B. Ishola
Summary: The modeling capabilities of ANFIS, ANN, and RSM were assessed in the transesterification process, with ANFIS and ANN models showing higher precision and accuracy compared to RSM. By optimizing process input variables, ANFIS-GA achieved the highest PKOB yield.
Article
Energy & Fuels
Ropo Oluwasesan Omilakin, Ayooluwa Paul Ibrahim, Babajide Sotunde, Eriola Betiku
Summary: The study aims to find novel and underexploited plant oilseeds to meet the global demand for oils. The extraction process of oil from Hura crepitans seeds was modeled using response surface methodology (RSM) and adaptive neuro-fuzzy inference system (ANFIS). The results show that ANFIS is marginally superior to RSM in modeling, while GA is slightly better than RSM in process optimization.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
Olubukola A. Fadara, Olayomi A. Falowo, Tunde V. Ojumu, Eriola Betiku
Summary: This study explored the potential application of an active biocatalyst from pawpaw trunk for transesterification of kariya seed oil with methanol to obtain biodiesel using microwave irradiation. The study successfully optimized the process variables to achieve a high biodiesel yield.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2021)
Editorial Material
Energy & Fuels
Kaniki Tumba, Timothy P. Durrett, Subramaniapillai Niju, Tunde Victor Ojumu, Martin Safari Tango, Eriola Betiku
FRONTIERS IN ENERGY RESEARCH
(2021)
Correction
Chemistry, Multidisciplinary
Babatunde Oladipo, Elaine Govender-Opitz, Tunde V. Ojumu
Article
Thermodynamics
Olayomi Abiodun Falowo, Oluwakemi Esther Apanisile, Adesola Oluwadamilola Aladelusi, Ayooluwa Emmanuel Adeleke, Mahamudat Abiodun Oke, Anthony Enamhanye, Lekan M. Latinwo, Eriola Betiku
Summary: The study evaluated the optimal reaction conditions for the synthesis of biodiesel from waste cooking oil and honne seed oil blend, comparing the effects of different catalysts on biodiesel yield. The results indicated that processes catalyzed with synthetic KOH and Ba(OH)2 achieved higher biodiesel yields and quality that met American standard specifications.
ENERGY CONVERSION AND MANAGEMENT-X
(2021)
Article
Energy & Fuels
Olayomi Abiodun Falowo, Eriola Betiku
Summary: This study developed a new green heterogeneous alkali catalyst from cocoa, kola nut, and fluted pumpkin wastes for transesterification of yellow oleander-rubber seed oil blend. By optimizing catalyst concentration, temperature, and time, high yields of biodiesel were achieved, demonstrating the potential for sustainable and economic biodiesel production using agricultural waste materials.
Article
Environmental Sciences
Linda Maina, Ademola Rabiu, Tunde Ojumu, Oluwaseun Oyekola
Summary: This study investigates the use of a bifunctional catalyst for esterification and transesterification reactions on high FFA low-cost feedstocks. The results show that the synthesized catalysts promote simultaneous esterification and transesterification, leading to improved biodiesel yield. The study also reveals a correlation between the acid/base catalyst ratio and FFA content, highlighting the importance of tailor-made catalysts for efficient biodiesel production.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Green & Sustainable Science & Technology
Taiwo Hassan Ibrahim, Eriola Betiku, Bamidele Ogbe Solomon, Julius Olusegun Oyedele, Samuel Olatunde Dahunsi
Summary: This study modeled and optimized the anaerobic digestion of cassava vinasse (CV) to produce biomethane. The results showed that CV has the potential for biogas production, and provided important information for the bioethanol industry and environmental agencies.
Article
Thermodynamics
Chiazor Faustina Jisieike, Niyi Babatunde Ishola, Lekan M. Latinwo, Eriola Betiku
Summary: This study evaluated the modeling effectiveness of response surface methodology (RSM) and adaptive neuro-fuzzy inference system (ANFIS) in esterifying crude rubber seed oil (CRSO) with high free fatty acid (FFA). The ANFIS-PSO hybrid provided the best optimal conditions, resulting in the lowest FFA of 0.56%.
Article
Multidisciplinary Sciences
Olusola S. Amodu, Moradeyo O. Odunlami, Joseph T. Akintola, Tunde V. Ojumu, Olushola S. Ayanda
Summary: In this study, banana peel extract was used as an environmentally friendly corrosion inhibitor for mild steel in hydrochloric acid. The inhibition efficiency was assessed by monitoring the pH of the acid solution and the evolution of hydrogen gas, and optimized using response surface methodology and artificial neural network. The results showed that the concentration of the extract had an impact on the corrosion inhibition efficiency, and the optimum conditions were determined. Both RSM and ANN were found to be effective optimization techniques, with ANN providing accurate predictions even with limited data.
Article
Materials Science, Paper & Wood
Eriola Betiku, Ebenezer O. Olatoye, Lekan M. Latinwo
Summary: This study investigates the conversion of underutilized breadfruit starch to bioethanol using yeast fermentation. The results suggest that breadfruit starch can be hydrolyzed using acid hydrolysis and microwave irradiation, and the obtained starch can be used as a substrate for bioethanol production.
JOURNAL OF BIORESOURCES AND BIOPRODUCTS
(2023)
Article
Green & Sustainable Science & Technology
Oluwatosin Helen Olagbende, Olayomi Abiodun Falowo, Lekan M. Latinwo, Eriola Betiku
Summary: The study investigated the esterification of Khaya senegalensis seed oil (KSSO) with high free fatty acid (FFA) using ferric sulfate as a solid heterogeneous acid catalyst. By modeling and optimizing input variables, the study found key process conditions and determined the kinetic and thermodynamic properties for reactor design. Overall, the study aims to utilize KSSO as a feedstock for biodiesel synthesis and provide guidance for industrial reactor design.
CLEANER ENGINEERING AND TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Adebola Iyabode Akinjokun, Leslie Felicia Petrik, Aderemi Okunola Ogunfowokan, John Ajao, Tunde Victor Ojumu
Summary: In this study, cellulose nanocrystals (CNCs) were isolated from cocoa pod husk waste and characterized for their crystallinity, structure, thermal characteristics, morphology, and dimensions. It was found that increasing chemical treatments led to improved purity, crystallinity index, and thermal stability of the extracted materials. The CNCs isolated from cocoa pod husk had a diameter of 10-60 nm, length of 41-155 nm, and a crystallinity index of 67.60%.
