Journal of Bioresources and Bioproducts最新文献_第10页

Evaluating process of auto-hydrolysis prior to kraft pulping on production of chemical pulp for end used paper-grade products 评价硫酸盐制浆前自动水解工艺对最终用纸级产品化学浆生产的影响

Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI: 10.1016/j.jobab.2022.05.002

Wenchao Jia , Miaofang Zhou , Chenfeng Yang , He Zhang , Meihong Niu , Haiqiang Shi

{"title":"Evaluating process of auto-hydrolysis prior to kraft pulping on production of chemical pulp for end used paper-grade products","authors":"Wenchao Jia , Miaofang Zhou , Chenfeng Yang , He Zhang , Meihong Niu , Haiqiang Shi","doi":"10.1016/j.jobab.2022.05.002","DOIUrl":"10.1016/j.jobab.2022.05.002","url":null,"abstract":"<div><p>The objective of this work is to systematically evaluate the performance of the hydrolysis-based kraft pulping process and associated pulp and black liquor characteristics. Acacia wood chips were auto-hydrolyzed under various severities, then the hydrolyzed wood chips were kraft pulping. The results indicated that the yield of pulp significantly dropped with intensifying the auto-hydrolysis severity. Meanwhile, the removal rate of pentosan reached 98.6% in the screened pulp at the P-factor of 1 000. The fiber length, fines and fiber crimp of the screened pulp were not affected by the auto-hydrolysis treatment. Auto-hydrolyzed pulps deteriorated fibrillation and beating response of the pulp in a refining process. However, fiber length and fines changed obviously after beating treatment. After auto-hydrolysis, the tensile index of the paper matrices decreased, some particle substances were found on the surface of the pulp fiber, and the solid and organic content of the black liquor were improved.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 3","pages":"Pages 180-189"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969822000354/pdfft?md5=9be97d2c53237d8c284fc3ed751d441c&pid=1-s2.0-S2369969822000354-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48826398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Plastic crisis underscores need for alternative sustainable-renewable materials 塑料危机凸显了对可替代可持续可再生材料的需求

Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI: 10.1016/j.jobab.2022.06.001

Su Shiung Lam , Changlei Xia , Christian Sonne

引用次数: 24

High-fructose corn syrup production and its new applications for 5-hydroxymethylfurfural and value-added furan derivatives: Promises and challenges 高果糖玉米糖浆的生产及其5-羟甲基糠醛和增值呋喃衍生物的新应用:前景与挑战

Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI: 10.1016/j.jobab.2022.03.004

Aristide Laurel Mokale Kognou , Sarita Shrestha , Zihua Jiang , Chunbao (Charles) Xu , Fubao Sun , Wensheng Qin

{"title":"High-fructose corn syrup production and its new applications for 5-hydroxymethylfurfural and value-added furan derivatives: Promises and challenges","authors":"Aristide Laurel Mokale Kognou , Sarita Shrestha , Zihua Jiang , Chunbao (Charles) Xu , Fubao Sun , Wensheng Qin","doi":"10.1016/j.jobab.2022.03.004","DOIUrl":"10.1016/j.jobab.2022.03.004","url":null,"abstract":"<div><p>High fructose corn syrup has been industrially produced by converting glucose to fructose by glucose isomerases, tetrameric metalloenzymes widely used in industrial biocatalysis. Advances in enzyme engineering and commercial production of glucose isomerase have paved the way to explore more efficient variants of these enzymes. The 5-hydroxymethylfurfural can be produced from high fructose corn syrup catalytic dehydration, and it can be further converted into various furanic compounds chemically or biologically for various industrial applications as a promising platform chemical. Although the chemical conversion of 5-hydroxymethylfurfural into furanic compounds has been extensively investigated in recent years, bioconversion has shown promise for its mild conditions due to the harsh chemical reaction conditions. This review discusses protein engineering potential for improving glucose isomerase production and recent advancements in bioconversion of 5-hydroxymethylfurfural into value-added furanic derivatives. It suggests biological strategies for the industrial transformation of 5-hydroxymethylfurfural.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 3","pages":"Pages 148-160"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S236996982200024X/pdfft?md5=53683762bf60fcd057683f720f48f1eb&pid=1-s2.0-S236996982200024X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43065738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Mechanism of selective hydrolysis of alginates under hydrothermal conditions 水热条件下海藻酸盐选择性水解机理研究

Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI: 10.1016/j.jobab.2022.04.001

Taku Michael Aida , Yasuaki Kumagai , Richard Lee Smith Jr

{"title":"Mechanism of selective hydrolysis of alginates under hydrothermal conditions","authors":"Taku Michael Aida , Yasuaki Kumagai , Richard Lee Smith Jr","doi":"10.1016/j.jobab.2022.04.001","DOIUrl":"https://doi.org/10.1016/j.jobab.2022.04.001","url":null,"abstract":"<div><p>Mechanisms of selective hydrolysis of alginates under hydrothermal conditions were investigated by comparing reactivities of sodium alginate (Na-ALG, 960 ku) solutions and calcium alginate (Ca-ALG) gels as substrates. Under hydrothermal conditions (150 °C), hydrolysis of Na-ALG gave product molecular weights of 223, 66, 26 and 17 ku while those of Ca-ALG gave product molecular weights of 340, 102, 45 and 31 ku for reaction times of 10, 20, 30 and 60 min, respectively. The ratios of mannuronic acid (M) to guluronic acid (G) varied only slightly (from 1.3 to 1.2) for Na-ALG over the range of reaction times at 150 °C, while ratios (M/G) for Ca-ALG exhibited a remarkable decrease (from 1.1 to 0.8). Diad sequence of alginate products obtained for Na-ALG were 17%, 23%, 27% and 31% (GG); 30%, 32%, 36% and 38% (MM); and 53%, 46%, 37% and 32% (GM+MG); while for Ca-ALG they were 18%, 22%, 24% and 33% (GG); 26%, 23%, 26% and 18% (MM); and 56%, 54%, 50% and 48% (GM+MG). Reaction mechanisms are proposed for hydrolysis of alginate solutions and alginate gels under hydrothermal conditions; de-polymerization of alginates into monomers and monomeric sequences can be controlled not only by hydrothermal conditions, but also by varying the physical state (solution, gel) of the starting materials.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 3","pages":"Pages 173-179"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969822000330/pdfft?md5=a4784ce67620b9d2d25084b780f0c982&pid=1-s2.0-S2369969822000330-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136594354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of chitin nanocrystals on coverage of coating layers and water retention of coating color 几丁质纳米晶体对涂层覆盖度和涂层保水性能的影响

Journal of Bioresources and Bioproducts Pub Date : 2022-08-01 DOI: 10.1016/j.jobab.2021.11.003

Ruoshi Gao, Yi Jing, Yeyan Ni, Qiwen Jiang

{"title":"Effects of chitin nanocrystals on coverage of coating layers and water retention of coating color","authors":"Ruoshi Gao, Yi Jing, Yeyan Ni, Qiwen Jiang","doi":"10.1016/j.jobab.2021.11.003","DOIUrl":"10.1016/j.jobab.2021.11.003","url":null,"abstract":"<div><p>This study assessed the applicability of chitin nanocrystals prepared by 2, 2, 6, 6-Tetramethyl-1-Piperidine-1-oxyl radical (TEMPO)-mediated oxidation in traditional papermaking coating color systems. The <em>α</em>-chitin nanocrystals (CTNCs) with different carboxyl content, size, and morphology were prepared from crab shells by alkali pretreatment and TEMPO-mediated oxidation in the water at pH 10, and then the ratio of CTNCs to latex was applied to traditional coating color system to replace part of latex. The results showed that when the amount of NaClO added as co-oxidant in the oxidation was 15.0 mmol/g of chitin, the carboxyl content of alkali-pretreated CTNCs was up to 0.76 mmol/g. The amount of carboxyl groups presented a linear relation with the degree of individualization of nanocrystals and dispersion. When the ratio of latex to CTNCs was 90꞉10, the water retention value of the coating was 92% lower than that of the pure latex system, and the rheological property was better. The relationship between the addition amount of CTNCs and the surface strength and the coverage of coating layers were also studied, and results showed that when the ratio of latex to CTNCs was 95꞉5, the surface strength was the highest of 1.45 m/s, and the coverage of coating layers rate reached the highest of 78%.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 3","pages":"Pages 201-210"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969821000839/pdfft?md5=123488545ae287d641e2d7e54c384b89&pid=1-s2.0-S2369969821000839-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49613734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

A mixed acid methodology to produce thermally stable cellulose nanocrystal at high yield using phosphoric acid 用磷酸高产率生产热稳定纤维素纳米晶体的混合酸方法

Journal of Bioresources and Bioproducts Pub Date : 2022-05-01 DOI: 10.1016/j.jobab.2021.12.002

Khairatun Najwa Mohd Amin , Alireza Hosseinmardi , Darren J. Martin , Pratheep K. Annamalai

{"title":"A mixed acid methodology to produce thermally stable cellulose nanocrystal at high yield using phosphoric acid","authors":"Khairatun Najwa Mohd Amin , Alireza Hosseinmardi , Darren J. Martin , Pratheep K. Annamalai","doi":"10.1016/j.jobab.2021.12.002","DOIUrl":"10.1016/j.jobab.2021.12.002","url":null,"abstract":"<div><p>Cellulose nanocrystal (CNC) with distinctive shape-morphology, enhanced thermal stability and dispersibility is essential for overcoming the challenges in processing polymer/CNC nanocomposites through melt compounding at elevated temperatures. This study shows a mixed acid hydrolysis method to produce CNC with improved thermal stability and high productivity. The use of phosphoric acid (H<sub>3</sub>PO<sub>4</sub>), as a mild acid, in combination with a strong acid either sulphuric acid (H<sub>2</sub>SO<sub>4</sub>) or hydrochloric acid (HCl) leads to reduced use of strong acids and low impact on our environment. The influences of acid combination and sequence of addition on the production yield were investigated by retaining the proportion of H<sub>3</sub>PO<sub>4</sub> to corrosive acid (H<sub>2</sub>SO<sub>4</sub> and HCl) 4 to 1, and solid to liquid ratio 1꞉75. This methodology has enabled to isolate CNC with higher thermal stability, dispersibility and productivity in terms of amount acid used 1 g of CNC, as compared with single acid hydrolysis. The CNC produced using the combination of H<sub>3</sub>PO<sub>4</sub> and HCl exhibits high thermal stability, dispersibility and rod-like shape morphology with length and width of (424 ± 86) and (22 ± 3) nm, respectively. Moreover, this approach has reduced H<sub>3</sub>PO<sub>4</sub> consumption by 54% as compared with single acid hydrolysis method for the production of same amount of CNC.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 2","pages":"Pages 99-108"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969821000864/pdfft?md5=f7cbbb1d4ac348dd55dd389376d88e75&pid=1-s2.0-S2369969821000864-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49302804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Improvement of quality of Ginkgo biloba seeds powder by solid-state fermentation with Eurotium cristatum for developing high-value ginkgo seeds products 利用冠状Eurotium固态发酵提高银杏种子粉品质，开发高价值银杏种子产品

Journal of Bioresources and Bioproducts Pub Date : 2022-05-01 DOI: 10.1016/j.jobab.2021.10.002

Minmin Zou , Jiarui Cao , Wen Zhang , Chao Tang , Fuliang Cao , Erzheng Su

{"title":"Improvement of quality of Ginkgo biloba seeds powder by solid-state fermentation with Eurotium cristatum for developing high-value ginkgo seeds products","authors":"Minmin Zou , Jiarui Cao , Wen Zhang , Chao Tang , Fuliang Cao , Erzheng Su","doi":"10.1016/j.jobab.2021.10.002","DOIUrl":"10.1016/j.jobab.2021.10.002","url":null,"abstract":"<div><p>In this study, we investigated the feasibility of <em>Ginkgo biloba</em> seeds powder by solid-state fermentation with <em>Eurotium cristatum</em> for developing high-value ginkgo seeds products. The optimum fermentation medium was consisted of 10 g of 40-mesh ginkgo seeds powder loaded in 100 mL Erlenmeyer flask with 50% (w/w) of water content, 4% (w/w) of MgSO<sub>4</sub> and 5% (w/w) of KH<sub>2</sub>PO<sub>4</sub> addition. The optimum fermentation conditions were pH 5.0, 2 × 10<sup>8</sup> CFU/g of inoculum size, 3 mL of sterilized water supplemented every two days during the four days of fermentation. Through fermentation, the spore number of <em>E. cristatum</em> was improved by about 36 times with the production of lovastatin reaching (54.10±0.16) µg/g. The antioxidant activity of fermented ginkgo seeds powder also got obvious enhancement, which could help eliminate excess free radicals produced by normal metabolism. The content of free amino acids increased by 82.32%. Except that the sugar was consumed in some degree, the other nutritional and functional components were well preserved while the content of detrimental ginkgolic acids was reduced by 44.97%. In addition, fermented ginkgo seeds powder possessed better digestibility and showed pleasant orange-like smelling. In conclusion, the quality of ginkgo seeds powder was remarkably improved through solid-state fermentation by using <em>E. cristatum</em>, which could be a promising way for functional applications of ginkgo seeds.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 2","pages":"Pages 135-144"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969821000797/pdfft?md5=4f59b2d7f4f515889a9bc296fe7e6f14&pid=1-s2.0-S2369969821000797-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43300461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Sources, production and commercial applications of fungal chitosan: A review 真菌壳聚糖的来源、生产及商业应用综述

Journal of Bioresources and Bioproducts Pub Date : 2022-05-01 DOI: 10.1016/j.jobab.2022.01.002

Tanzina Huq , Avik Khan , David Brown , Natasha Dhayagude , Zhibin He , Yonghao Ni

{"title":"Sources, production and commercial applications of fungal chitosan: A review","authors":"Tanzina Huq , Avik Khan , David Brown , Natasha Dhayagude , Zhibin He , Yonghao Ni","doi":"10.1016/j.jobab.2022.01.002","DOIUrl":"10.1016/j.jobab.2022.01.002","url":null,"abstract":"<div><p>Chitosan is a type of biopolymer that can be obtained from animal/marine sources, and it can also be extracted or produced from agriculture waste products like mushroom or different fungal sources after the chitin deacetylation. Depending on the size of mushroom farm, the amount of waste ranges between 5% and 20% of the production volume. The cell wall of the filamentous fungi, a good source of chitin, offers an easy way to extract chitin. The physicochemical characteristics such as molecular weight and degree of deacetylation of fungal chitosan can be controlled compared to chitosan obtained from crustacean sources. Fungal sourced chitosan can be used in food, pharmaceutical or biomedical applications for different applications, for example, as an antimicrobial agent, coating material, water purification or bio-pesticide. This review mainly focused on the extraction of chitin from mushroom or different fungal sources and also showed some applications of commercial chitosan products.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 2","pages":"Pages 85-98"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969822000020/pdfft?md5=ee8175526611aab86edfa70b551079f9&pid=1-s2.0-S2369969822000020-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41640778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 82

Comparative phytochemical, thin layer chromatographic profiling and antioxidant activity of extracts from some Indian herbal drugs 一些印度草药提取物的植物化学、薄层色谱分析和抗氧化活性比较

Journal of Bioresources and Bioproducts Pub Date : 2022-05-01 DOI: 10.1016/j.jobab.2022.01.001

Md Sohail Akhtar , Mohamed Rafiullah , Wegdan Aly Shehata , Amzad Hossain , Mohammed Ali

{"title":"Comparative phytochemical, thin layer chromatographic profiling and antioxidant activity of extracts from some Indian herbal drugs","authors":"Md Sohail Akhtar , Mohamed Rafiullah , Wegdan Aly Shehata , Amzad Hossain , Mohammed Ali","doi":"10.1016/j.jobab.2022.01.001","DOIUrl":"10.1016/j.jobab.2022.01.001","url":null,"abstract":"<div><p>Natural antioxidants play a significant role to prevent cell breaking and regenerate cells. Three plants native to India named dwarf morning-glory (<em>Evolvulus alsinoides</em>), Indian banyan (<em>Ficus bengalensis</em>) and chicory (<em>Chicorium intybus</em>) are used as medicine in India traditionally to treat diseases. The aim of this study is to evaluate and compare the antioxidant activity as well as to compare phytochemical profiles of the aqueous extracts of the selected three plants. The dried plant powder was extracted with ethanol individually by using the Soxhlet method for eight hours and the solvent was evaporated under reduced pressure. Similarly, the air-dried powder was extracted with water, and the water was evaporated. The thin layer chromatography (TLC) profile of the extracts was determined by using TLC densitometer and the antioxidant activity was determined by the conventional 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. The TLC profile shows that there are no similarities of retention factor (<em>R</em><sub>f</sub>) values among the plant extracts which means all three plants contain different chemical compounds. The antioxidant activities of the aqueous extracts at different concentrations show different antioxidant activities. Percentage inhibition is dose dependent, as doses are increasing then percentage inhibition is also increasing for all three plant extracts. Among the selected plants, the highest activity was found in <em>C. intybus</em> and the lowest was in <em>E. alsinoides.</em> The order of the antioxidant activity among the selected plants was <em>C. intybus < F. bengalensis < E. alsinoides.</em> Based on the TLC profile and antioxidant activities, the highest activity of the selected plant species was evaluated.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"7 2","pages":"Pages 128-134"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2369969822000019/pdfft?md5=437d3085f99a149111634f0434567793&pid=1-s2.0-S2369969822000019-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42740147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Is engineered wood China's way to carbon neutrality? 工程木材是中国实现碳中和的途径吗?

Journal of Bioresources and Bioproducts Pub Date : 2022-05-01 DOI: 10.1016/j.jobab.2022.03.001

Christian Sonne , Changlei Xia , Su Shiung Lam

引用次数: 12