Article
Engineering, Chemical
Rafik Balti, Nourhene Zayoud, Florence Hubert, Lucie Beaulieu, Anthony Masse
Summary: Membrane diafiltration process was used to fractionate water soluble proteins from Spirulina, resulting in high purity phycocyanin extracts and production of blue color permeates with low chlorophyll content. High recovery rates and protein concentration were achieved, with successful size-based fractionation of proteins.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Food Science & Technology
Marianna Giannoglou, Varvara Andreou, Ioanna Thanou, Giorgos Markou, George Katsaros
Summary: The application of high-pressure technology for protein extraction from cyanobacteria was investigated, and optimum conditions were found to be using 300 MPa pressure for 10 minutes with deionized water or phosphate buffer as the medium.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2022)
Article
Biotechnology & Applied Microbiology
Jennifer Sanchez-Laso, Alejandro Piera, Gemma Vicente, Luis Fernando Bautista, Rosalia Rodriguez, Juan J. Espada
Summary: The study investigated the extraction of phycobiliprotein and carbohydrates from Arthrospira platensis using an imidazolium-based IL and sonication. Results showed that high extraction yield could be achieved by optimizing conditions, and the recovered IL could be reused for seven cycles with acceptable phycocyanin extraction amount. The use of [Emim] [EtSO4] + ultrasound showed promising results in terms of extracted phycocyanin and IL reusability.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2021)
Article
Food Science & Technology
Qian Chen, Shuhui Li, Hua Xiong, Qiang Zhao
Summary: This study compared the effects of four different extraction methods on chloro-phycocyanin, finding that high-pressure cell disruption technology could produce a food-grade C-phycocyanin product with higher CP concentration, purity, solubility, and antioxidant activity.
Article
Biotechnology & Applied Microbiology
Mohamed Gomaa, Shimaa Abdelmohsen Ali, Awatief F. Hifney
Summary: This study evaluated the effects of organic acids on biomass and phycobiliprotein production from Arthrospira platensis. The findings showed that adding 3 mM of succinic acid significantly increased the productivity of phycocyanin, and organic acids also enhanced its thermal stability.
MICROBIAL CELL FACTORIES
(2023)
Article
Biology
Wanida Pan-utai, Siriluck Iamtham, Sittiruk Roytrakul, Sarn Settachaimongkon, Ladda Sangduean Wattanasiritham, Sumitra Boonbumrung, Juta Mookdasanit, Sayamon Sithtisarn
Summary: Random mutagenesis using diethyl sulphate (DES) is highly effective for increased production of C-phycocyanin and proteins in Arthrospira (Spirulina) platensis.
Article
Food Science & Technology
Marianna Giannoglou, Varvara Andreou, Ioanna Thanou, Giorgos Markou, George Katsaros
Summary: The combined effect of high pressure and pH-value on protein extraction from Spirulina platensis was studied. It was found that higher pressures and pH values increased the extraction rates of proteins. The optimal combination of high pressure and pH conditions were identified to improve protein purity and extraction efficiency.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2023)
Article
Biotechnology & Applied Microbiology
Daniil Sukhinov, Kirill Gorin, Alexander O. Romanov, Pavel M. Gotovtsev, Yana E. Sergeeva
Summary: This study demonstrated that using chitosan as a flocculating agent can effectively harvest cyanobacteria Arthrospira platensis, extract purer C-phycocyanin, and enhance its thermal stability. However, the antioxidant activity may slightly decrease in the extracted C-phycocyanin after flocculation processes.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Food Science & Technology
Elvis Maujean, Stephane Desobry, Guillaume Gillet, Nicolas Poupard, Isabelle Desjardins-Lavisse, Sylvie Desobry-Banon
Summary: The study compared the preservation of spirulina using pressurised cryogenic nitrogen technology (PCN) to traditional methods, showing that PCN better preserved the morphology and nutrient content of spirulina. Pressurisation helped reduce cell fragmentation and enhance the antioxidant capacity of the spirulina samples.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Sanghamitra Khandual, Edgar Omar Lopez Sanchez, Hugo Espinosa Andrews, Jose Daniel Padilla de la Rosa
Summary: A blue natural food colorant, phycocyanin, was efficiently extracted from Arthrospira platensis in Mexico using an ultrasonication bar with a water solvent. The highest phycocyanin content of 54.65 mg/g was achieved through this method. Storage at -20 degrees C and pH 7 was found to be the most stable condition for phycocyanin, with partial purification using ammonium sulfate to achieve a purity of nearly 1.
Article
Biotechnology & Applied Microbiology
Priscila Santos Correa, Claudia Maria Luz Lapa Teixeira
Summary: Valorization of industrial waste as a carbon source, such as crude glycerol, can reduce cultivation costs and increase PHAs production; It is found in the study that adding a certain concentration of pure or crude glycerol can significantly increase the biomass and PHAs content of microalgae, while glycerol mixotrophic cultivations with simultaneous nutrient depletion (nitrogen or phosphorus) did not improve PHAs accumulation.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Liqun Jiang, Siteng Yu, Haiyan Pei
Summary: By comparing the production of C-phycocyanin by Spirulina subsalsa and Arthrospira platensis in different culture media, it was found that Spirulina subsalsa has higher content and extraction efficiency in seawater, making it a more promising candidate for cultivation in a seawater environment.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Nutrition & Dietetics
Giuliana Donadio, Valentina Santoro, Fabrizio Dal Piaz, Nunziatina De Tommasi
Summary: Spirulina, a micro-algae known for its beneficial effects, is used in nutraceuticals and functional foods, although studies on the bioavailability of bioactive compounds are limited. A simulated digestion protocol showed that the type of food matrix can influence the production of peptides from Spirulina, with kiwifruit significantly reducing peptide production in kiwi sorbet.
Article
Biotechnology & Applied Microbiology
Soo-Bin Jung, Min-Soo Kang, Joo-Young Jung, Jong-Hee Kwon
Summary: Phycocyanin, a natural blue pigment, can be efficiently and economically extracted from Spirulina through autolysis without the use of extraction salt solution or successive freezing-thawing process. Temperature, initial concentration of bicarbonate in growth medium, and concentration of wet biomass are important factors influencing the extraction yield.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2022)
Article
Food Science & Technology
Marco Faieta, Lilia Neri, Alessandro Di Michele, Carla D. Di Mattia, Paola Pittia
Summary: The study investigated the impact of High Hydrostatic Pressure (HHP) on phycobiliproteins from Spirulina platensis extract, as well as the protective effects of sugars at different concentrations. Results showed that HHP treatment reduced phycobiliproteins concentration, but the addition of sugars helped improve stability of phycocyanin and preserved antioxidant activity.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2021)
Article
Biotechnology & Applied Microbiology
Alexander W. Rogers, Ziqi Song, Fernando Vega Ramon, Keju Jing, Dongda Zhang
Summary: Hybrid modelling combines data-driven and mechanistic modelling to provide a cost-effective solution for complex biochemical reaction kinetics. The amount of kinetic information incorporated into a hybrid model has not been systematically addressed. This study built three hybrid models and demonstrated their improved predictive confidence and similar accuracy to the original kinetic model in predicting temperature-dependent rates of biomass growth, glucose consumption, and gamma-linolenic acid accumulation during fermentation.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Liangliang Zhang, Man Xu, Qinhao Guan, Jianchun Jiang, Kang Sun, Emmanuel Manirafasha
Summary: The study aimed to identify the tannin content of vegetables in China. Tannins were extracted from 72 plants and their content and purity were determined. Plants such as Pltycarya strobilacea and Quercus acutissima were found to have high tannin contents and are potential resources for vegetable tannins in China.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Energy & Fuels
Jiahong Chen, Wenlong Jia, Xin Yu, Yong Sun, Jiaren Zhang, Shuliang Yang, Xing Tang, Lincai Peng, Xianhai Zeng, Lu Lin
Summary: In this study, a highly stable chromium-free catalyst Co3AlOx was prepared for the synthesis of furfuryl alcohol. The catalyst exhibited excellent catalytic activity and stability, enabling efficient hydrogenation of furfural to furfuryl alcohol.
Review
Health Policy & Services
Zaixing Wang, Chunling Liu, Baoying Tan, Guoqing Sun, Poucheok Pang, Kangchen Lv, Hui Xie, Xiong Ou, Xianhai Zeng, Jianwei Xuan
Summary: This study evaluated the clinical and economic benefits of the IGS navigation system in FESS surgery. The results showed that IGS can help avoid postoperative bleeding complications, and the overall cost is comparable to conventional surgery. Therefore, IGS is cost-effective in the treatment of FESS.
COST EFFECTIVENESS AND RESOURCE ALLOCATION
(2023)
Article
Engineering, Chemical
Ye Tian, Binglin Chen, Zhendong Yu, Renjie Huang, Guihua Yan, Zheng Li, Yong Sun, Shuliang Yang, Xing Tang, Lu Lin, Xianhai Zeng
Summary: In this study, a bifunctional catalyst consisting of CoOx loaded on Nb2O5 was synthesized by the wetness impregnation method, which exhibited high activity for the selective hydrogenation/rearrangement of biomass-derived furfural to generate cyclopentanone and cyclopentanol. The characterization of the catalyst revealed that CoOx served as the active site responsible for the hydrogenation of furfural. Increasing the ratio of Bronsted/Lewis acidic sites in the catalyst facilitated the hydrogenative ring rearrangement.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Agricultural Engineering
Miao Zuo, Wenrong Che, Wenlong Jia, Zheng Zhou, Xianhai Zeng, Lu Lin
Summary: Different multilayer mesoporous carbon solid catalysts were prepared and used for the synthesis of 5-hydroxymethylfurfural (HMF) in carbohydrate-derived natural deep eutectic solvents (NADES). The structure of carbon carriers and solid acids were characterized using various techniques, and the formation processes of soft-templating copolymers and multilayer mesoporous carbons were discussed. The carbon solid acidic catalysts exhibited effective conversion of carbohydrates, with high HMF yields obtained from the NADES. This work provided a novel method for carbon catalyst synthesis and proposed a practical pathway for the conversion of carbohydrates into value-added chemicals.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Agricultural Engineering
Banglun Xiong, Sen Ma, Binglin Chen, Yunchao Feng, Zhiqing Peng, Xing Tang, Shuliang Yang, Yong Sun, Lu Lin, Xianhai Zeng, Yong Chen
Summary: This study investigated the impact of formic acid-facilitated hydrothermal pretreatment on bamboo, finding that it can increase the yield of xylo-oligosaccharides and produce lignin with better thermal stability. Through processing 100 kg of waste bamboo, it is estimated that 12.56 kg of xylo-oligosaccharides, 4.81 kg of xylose, 22.37 kg of glucose, and 13.28 kg of lignin can be obtained.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Agricultural Engineering
Liangqing Zhang, Jiarong Qiu, Jiahui Deng, Shunming Song, Zelong Hong, Wenlong Jia, Suchang Huang, Xianhai Zeng
Summary: This study synthesized a series of non-precious catalysts through co-precipitation and impregnation methods for the conversion of hemicellulosic biomass into sugar alcohols. The Ni8.98Fe1 @ 1.54SiO(2) catalyst prepared by the impregnation method showed excellent catalytic performance for converting xylose to sugar alcohols in a neutral aqueous solution, and it could also be applied to the direct conversion of hemicellulose. The catalyst with mesoporous properties and proper acidic sites played a vital role in the hydrolysis of hemicellulose into pentose sugars.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Thermodynamics
Nihong Zhuang, Jiacheng Wang, Sen Ma, Qiang Liu, Wenlong Jia, Xin Yu, Zheng Li, Shuliang Yang, Yong Sun, Xing Tang, Xianhai Zeng, Lu Lin
Summary: In this study, the solubility of FDCA in different ethers and binary solvent systems with water was measured. It was found that the solubility of FDCA was improved in binary solvent systems compared to pure solvents, and it initially increased and then gradually decreased with the increasing mole fraction of water. Various models and equations were used to analyze the solubility data and thermodynamic characteristics of FDCA in different solvent systems.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Chemistry, Multidisciplinary
Chengfeng Li, Qishen Lyu, Zheng Li, Shuliang Yang, Yong Sun, Xing Tang, Xianhai Zeng, Lu Lin
Summary: The hydrogenation of biomass-based furan compounds is a crucial step in catalytic utilization of biobased chemicals. Ru-based catalysts supported on various supports were evaluated for the hydrogenation of dimethyl 2,5-furandicarboxylate (FDMC), and Ru/HY exhibited the highest yield of tetrahydrofuran-2,5-dicarboxylic acid dimethyl ester (THFDMC) under certain conditions. The superior performance of Ru/HY was attributed to the presence of more surface Ru-0 species and carbon radical intermediates, favoring the activation of hydrogen and the subsequent hydrogenation of FDMC.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Energy & Fuels
Miao Zuo, Lu Lin, Xianhai Zeng
Summary: The synthesis of liquid fuel and fuel additives from biomass substrates has gained significant attention in recent years. 5-Ethoxymethylfurfural (5-EMF) is a highly desirable alternative to gasoline due to its stability, environmental friendliness, and high energy density. This paper reviews the research focus and characteristics of catalysts in synthesizing 5-EMF from different feedstocks, and compares the catalytic effect and mechanism of action of these catalysts. It aims to facilitate and inspire future research on 5-EMF synthesis.
Review
Agricultural Engineering
Liangqing Zhang, Suchang Huang, Jiarong Qiu, Bingshu Wang, BeiBei Yan, Jingwen Zhang, Ben Zhou, Jianfeng Chen, Xianhai Zeng
Summary: The conversion of biomass-derived substrates into 1,2-butanediol (1,2-BDO) is hindered by low yield and unclear reaction pathways and mechanisms. This review proposes generating C4 intermediates and transforming them to 1,2-BDO as critical procedures for enhancing yield. Specific functional catalysts should be designed to facilitate these steps and inhibit side reactions. Innovative approaches and detection methods are suggested to reveal the reaction pathways and mechanisms, such as isotopic exchange method and situ on-line Fourier transform infrared spectroscopy. Adjusting acid ratios, base strength, and oxidation state, combined with theoretical calculations, can promote the formation of 1,2-BDO and inhibit side reactions. Research breakthroughs are anticipated using these approaches.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Agricultural Engineering
Danni Li, Rui Shan, Jing Gu, Xianhai Zeng, Lu Lin, Taoli Huhe, Haoran Yuan, Yong Chen
Summary: This study investigated the co-pyrolysis behavior, products, and heavy metals migration during the co-pyrolysis of textile dyeing sludge and litchi shells. The addition of litchi shells improved the co-pyrolysis process, promoting the generation of phenols and acid compounds while inhibiting the production of nitrogenated compounds, ketones, and ethers. Litchi shells also reduced the formation of NOx precursors, increased the stable fractions of certain heavy metals, and decreased the potential Ecological Risk Index of the biochar. This study provided a cleaner and more efficient approach to co-pyrolysis and resource utilization of solid waste.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Binglin Chen, Zhendong Yu, Renjie Huang, Ye Tian, Zheng Li, Jonathan Sperry, Shuliang Yang, Xing Tang, Yong Sun, Lu Lin, Xianhai Zeng
Summary: This study reports the synthesis of 2,5-hexanedione (HD) from 5-(chloromethyl)furfural (CMF) using polymethylhydrosiloxane (PMHS) as the hydrogen donor for the first time. It was found that the yield of HD reached 78% at 160°C for 30 minutes. The presence of acidic protons significantly promoted the coupling reaction (hydrodechlorination, hydrogenolysis, and hydrolysis) from a kinetic and thermodynamic perspective. Modifying Pd nanoparticles (NPs) with in situ generated Cl species improved the adsorption of substrate molecules on step sites compared to corner sites. This work provides insights into the role of acidic protons and the migration mechanism of Cl species, and offers a basis for the development of future catalytic systems and the synthesis of biomass-derived chemicals.
Review
Chemistry, Physical
Weiping Deng, Yunchao Feng, Jie Fu, Haiwei Guo, Yong Guo, Buxing Han, Zhicheng Jiang, Lingzhao Kong, Changzhi Li, Haichao Liu, Phuc T. T. Nguyen, Puning Ren, Feng Wang, Shuai Wang, Yanqin Wang, Ye Wang, Sie Shing Wong, Kai Yan, Ning Yan, Xiaofei Yang, Yuanbao Zhang, Zhanrong Zhang, Xianhai Zeng, Hui Zhou
Summary: This review article focuses on the state-of-the-art catalytic transformation of lignocellulosic biomass into value-added chemicals and fuels, including the conversion of cellulose, hemicellulose, and lignin, as well as the gasification and pyrolysis of whole biomass. The opportunities, challenges, and prospects of woody biomass valorization are highlighted.
GREEN ENERGY & ENVIRONMENT
(2023)
