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Acetic acid-and furfural-based adaptive evolution of Saccharomyces cerevisiae strains for improving stress tolerance and lignocellulosic ethanol production

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Chinese Journal of Chemical Engineering 2024年第8期72卷 26-33页

作者： Omama Rehman Youduo Wu Quan Zhang Jin Guo Cuihuan Sun Huipeng Gao Yaqing Xu Rui Xu Ayesha Shahid Chuang Xue State Key Laboratory of Fine Chemicals Frontiers Science Centre for Smart Materials Oriented Chemical EngineeringEngineering Research Center of Application and Transformation for Synthetic BiologySchool of BioengineeringDalian University of TechnologyDalian 116024China Ningbo Institute of Dalian University of Technology Ningbo 315016China SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Co. Ltd.Dalian 116041China Microbial Research Institute of Liaoning Province Chaoyang 122000China Yunnan Provincial Rural Energy Engineering Key Laboratory Kunming 650600China US-Pak Center for Advanced Studies in Agriculture and food security University of AgricultureFaisalabadPakistan

Acetic acid and furfural are known as prevalent inhibitors deriving from pretreatment during lignocellulosic ethanol *** negatively impact cell growth,glucose uptake and ethanol biosynthesis of Saccharomyces cerevisiae *** of industrial *** strains with high tolerance towards these inhibitors is thus critical for efficient lignocellulosic ethanol *** this study,the acetic acid or furfural tolerance of different *** strains could be significantly enhanced after adaptive evolution via serial cultivation for 40 generations under stress *** acetic acid-based adaptive strain SPSC01-TA9 produced 30.5 g·L^(-1)ethanol with a yield of 0.46 g·g^(-1)in the presence of 9 g·L^(-1)acetic acid,while the acetic acid/furfural-based adaptive strain SPSC01-TAF94 produced more ethanol of 36.2 g·L^(-1)with increased yield up to 0.49 g·g^(-1)in the presence of both 9 g·L^(-1)acetic acid and 4 g·L^(-1)*** improvements were also observed during non-detoxified corn stover hydrolysate culture by SPSC01-TAF94,which achieved ethanol production and yield of 29.1 g·L^(-1)and 0.49 g·g^(-1),respectively,the growth and fermentation efficiency of acetic acid/furfural-based adaptive strain in hydrolysate was 95%higher than those of wildtype strains,indicating the acetic acid-and furfural-based adaptive evolution strategy could be an effective approach for improving lignocellulosic ethanol *** adapted strains developed in this study with enhanced tolerance against acetic acid and furfural could be potentially contribute to economically feasible and sustainable lignocellulosic biorefinery.

关键词： Saccharomyces cerevisiae Lignocellulosic ethanol production Adaptive evolution Acetic acid Furfural

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Global black soil distribution

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Frontiers of Agricultural Science and Engineering 2024年第2期11卷 271-281页

作者： Yuxin TONG Marcos E.ANGELINI Yusuf YIGINI Isabel LUOTTO Global Soil Partnership Land and Water DivisionFood and Agriculture Organization of the United NationsRome 00153Italy

Black soils, characterized by their thick, dark horizons enriched with organic matter, epitomize highly fertile soils. However, their fertility precipitates intense land use, engendering challenges such as soil erosion, nutrient depletion, pollution, compaction, salinization, and acidification. Notably, these soils are significant contributors to global greenhouse gas emissions, primarily due to substantial losses in soil organic carbon. Despite these challenges, black soils are pivotal for global food production. This paper delineates the implementation of digital soil mapping for the global cartography of black soils and human interference on these soils. Predominantly distributed in Eastern Europe, Central and Eastern Asia, and North and South America, black soils cover an approximate area of 725 Mha, with the Russian Federation,Kazakhstan, and China collectively have over half of this area. Agriculturally,these soils underpin significant proportions of global crop yields, producing 66% of sunflower, 30% of wheat, and 26% of potato outputs. The organic carbon content in the upper 30 cm of these soils is estimated at 56 *** management of black soils is imperative for ensuring food security and addressing climate change on a global scale.

关键词： Black soils distribution map food security soil organic carbon

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Improving the Quality of Baobab Oil by Filtration on Activated Carbon from the Fruit Capsules

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Journal of Materials Science and Chemical Engineering 2024年第1期12卷 69-83页

作者： Edouard Mbarick Ndiaye Alioune Sow Papa Guédel Faye Kalidou Ba Mouhamed Ndoye Omar Ibn Khatab Cisse Nicolas Cyrille Ayessou Mady Cisse Laboratory of Water Energy Environment and Industrial Processes (LE3PI) ESP-UCAD Dakar Senegal Laboratoire of Biological Agronomic Food Sciences and Modeling of Complex Systems (LABAAM) UFR of Agronomic Sciences Aquaculture and Food Technologies (S2ATA) Gaston Berger University of Saint-Louis Saint-Louis Senegal National School of Agriculture University Iba Der Thiam of Thiès Thiès Senegal Center of Studies on food security and Functional Molecules (CESAM-RESCIF) ESP-UCAD Dakar Senegal

The baobab, Adansonia digitata L., plays an important role in the economy of local populations. Nowadays, baobab seed oil is highly prized for its many cosmetic and therapeutic applications, and for its composition of unsaturated fatty acids, sterols, and tocopherols. However, it undergoes numerous reactions during production, processing, transport, and storage, leading to undesirable products that make it unstable. The aim of this study was to provide local processors with innovative solutions for the treatment of unrefined vegetable oils. To this end, an experimental device for filtering crude oil on activated carbon made from fruit capsules was designed. The results obtained after the treatment show a significant decrease at (p 2/Kg), chlorophyll concentration (1.81 to 0.50 mg/Kg) and primary and secondary oxidation products. According to these results, activated carbon’s adsorptive power eliminates oxidation products and certain pro-oxidants such as chlorophyll, resulting in a cleaner, more stable and better storable oil.

关键词： Activated Carbon Adansonia digitata L. Baobab Fruit Baobab Oil Stability

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Catechins promoted Enterococcus faecalis to alleviate related indices of nonalcoholic steatohepatitis mice induced by high-fat diet

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food Science and Human Wellness 2024年

作者： Ying Zhang Yaqin Zhou Ming Zhou Xiao Guan School of Health Science and Engineering， University of Shanghai for Science and Technology National Grain Industry (Urban Grain and Oil security) Technology Innovation Center MDO Smarter Grain Technology Co.， Ltd.

This study provides different opinion for exploring the mechanism of catechin (CAT) relieving nonalcoholic steatohepatitis (NASH)， it is more innovative to explore from the perspective of intestinal microorganism. Through in vitro fermentation experiments， CAT could improve the abundance of Enterococcus， and Enterococcus faecalis (EF) accounts for the vast majority of Enterococcus in human gut. The experimental results in vivo showed that EF group and CAT+EF group could reduce the body weight， liver weight and epididymal fat weight of NASH mice， and improve the changes of serum and liver indexes. HE staining observation showed that these two groups have greatly improved the fatty degeneration， balloon degeneration and necrotic focus caused by NASH. The alleviation of CAT+EF group was more obvious. Results of targeted metabonomics showed that CAT could promote EF to produce more methyl palmitate (MP， C16:0)， which plays a great role in relieving NASH. Our results indicated that EF could alleviate NASH and CAT+EF group had better alleviation may due to more production of MP by EF. This study provides a new idea for CAT to alleviate NASH.

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Oat arabinoxylan promoted Lactobacillus gasseri to alleviate metabolic disorders in high-fat diet-induced obese mice

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food Science and Human Wellness 2024年

作者： Ying Zhang Ming Zhou Yaqin Zhou Xiao Guan School of Health Science and Engineering， University of Shanghai for Science and Technology National Grain Industry (Urban Grain and Oil security) Technology Innovation Center MDO Smarter Grain Technology Co.， Ltd.

Arabinoxylan (AX) has been found to improve an imbalanced gut microbiota. Lactobacillus gasseri is a beneficial endogenous bacterium that has been shown to have several health benefits in the human gut， particularly its lipid-lowering activity. However， it is not known whether AX can promote the action of L. gasseri. The results of in vitro experiments showed that AX promoted biofilm formation in L. gasseri， its acid and bile salt resistance could be enhanced， and enabled better colonization of L. gasseri in the intestinal tract of mice. In vivo experiments showed that the AX+ L. gasseri group could effectively ameliorate weight gain and fat accumulation in high-fat diet-induced obese mice， and the L. gasseri group or AX+L. gasseri alleviated liver injury in mice. 16S rRNA sequencing showed that L. gasseri can colonize the mice intestine and AX+L. gasseri can ameliorate gut microbiota dysbiosis in obese mice by increasing Lactobacillus spp. and Coriobacteriaceae＿UCG-002 and decreasing Peptococcaceae. In addition， metabolomics results indicated that the L. gasseri group and the AX+L. gasseri group could alleviate metabolic disorders by decreasing the levels of L-phenylalanine， L-tyrosine， kynurenine acid， and arachidonic acid in obese mice. The effect of AX+L. gasseri group was better than that of the L. gasseri group， suggesting that AX promotes the lipid-lowering activity of L. gasseri， and the mechanism may be due to the activation of retrograde endocannabinoid signaling. AX can be used as a functional food ingredient to potentially alleviate obesity and metabolic syndrome.

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Diabetes and Hypertension Are Associated with food Insecurity in a Cameroonian Population: A Case-Control Study

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Journal of Biosciences and Medicines 2024年第2期12卷 1-21页

作者： Boris Ronald Tonou Tchuente Pauline Vervaine Hagbe Hippolyte Tene Mouafo Janvier Aime Fotso Youovop Ousmane Mfopou Mbiondi Javeres Leonel Ntepe Mbah Roussel Guy Nguemto Takuissu Raissa Francoise Ntentie Boris Gabin Kingue Azantsa Judith Laure Ngondi Julius Oben Enyong Department of Biochemistry Faculty of Sciences University of Yaounde 1 Yaounde Cameroon Centre for food Food Security and Nutrition Research Institute of Medical Research and Medicinal Plant Studies Yaounde Cameroon Department of Biosciences COMSATS University Islamabad Islamabad Pakistan Laboratory of Human Metabolism and Non-Communicable Disease Institute of Medical Research and Medicinal Plant Studies Yaounde Cameroon Higher Teacher’s and Training College University of Yaounde 1 Yaounde Cameroon Center of Nutrition and Functional foods Yaounde Cameroon

Diabetes and hypertension are the most prevalent cardiovascular risk factors. Recent studies showed an increase in the prevalence of food insecurity in our country. The aim of this study was to assess how food insecurity affects the dietary habits, socio-demographic characteristics and metabolic profile of individuals with diabetes or hypertension. This case-control study was conducted among diabetic and hypertensive participants (cases) and diabetic and hypertensive normal (controls) during the screening campaigns for nutrition-related chronic diseases. The sociodemographic, clinical and biochemical parameters of the participants were analyzed. Logistic regression analyses were performed to identify factors associated with diabetes and hypertension in the study population. Bivariate analyses showed that male gender (OR = 1.972;95% CI: 1.250 - 3.089), regular alcohol consumption (OR = 2.012;95% CI: 1.294 - 3.130), low fruit consumption (OR = 1.590;95% CI: 1.016 - 2.488), low dietary diversity (OR = 2.915;95% CI: 1.658 - 5.127) and abdominal obesity (OR = 1.893, CI 95% 1.203 - 2.978) were significantly associated with hypertension. In addition, low fruit consumption (OR = 1.829;95% CI 1.092 - 3.064), low legume consumption (OR = 3.515;95% CI 1.861 - 6.635), and hypertriglyceridaemia (OR = 2.241, 95% CI 1.139 - 4.408) were significantly associated with diabetes. The indirect association observed between food insecurity and diabetes and hypertension suggests the need for nutritional policies aimed at popularizing the production and consumption of fruits and legumes. Similarly, health services need to be aware and informed of the important role that food insecurity can play in the development of diabetes and hypertension.

关键词： food Insecurity Diabetes Hypertension Cameroon

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Oat avenanthramide B alleviates high-fat diet-induced obesity via regulating fatty acid metabolism involved in gut bacteria and fungi remodeling

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food Science and Human Wellness 2024年

作者： Yongyong Liu Kai Huang Xiao Guan Sen Li Hongdong Song Ying Zhang Yu Zhang Zhu Sun Zhiquan Yu School of Health Science and Engineering， University of Shanghai for Science and Technology National Grain Industry (Urban Grain and Oil security) Technology Innovation Center Inner Mongolia Yangufang Whole Grain Industry Development Co.， Ltd.

Oat avenanthramides (AVNs) have been found to exhibit novel lipid-lowering effects. However， the mechanism remains unclear. In this study， the effect of avenanthramide B (AVN B)， as one of the major AVNs， on high-fat diet (HFD)-induced mice was investigated. Results showed that AVN B significantly inhibited weight gain and improved hepatic and serum lipid biochemical indices. Hepatic RNA-Sequencing analysis suggested that AVN B significantly modulates fatty acid (FA) metabolism. Hepatic real-time qualitative polymerase chain reaction (RT-qPCR) and Western blot results indicated that AVN B could alleviate FA synthesis by activating the AMPK- SREBP1c-FAS， and increase FA oxidation by activating the AMPK/CPT1A and PPARα. Additionally， AVN B had a regulating effect on ileum lipid metabolism by inhibiting intestinal cell differentiation and down-regulating the expression levels of FA absorption-related protein and gene. Moreover， AVN B promoted the growth of beneficial bacteria and fungi such as Coriobacteriaceae＿UCG-002， Parvibacter， Enterococcus， and Aspergillus， while decreasing the abundance of Roseburia， unclassified＿f＿Lachnospiraceae Cladosporium， Eurotium， unclassified＿f＿Aspergillaceae and unclassified＿f＿Ceratocystidaceae. All these results provided new points of the lipid-lowing mechanism of AVNs and oats via the gut-liver axis.

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Efficiency of Legumes in Increasing Yam Yield under Sandy Ferrasol in the Forest Zone of Southwestern Côte d’Ivoire

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Open Journal of Soil Science 2024年第4期14卷 227-236页

作者： Germaine A. Tanoh Félix B. O. Bouadou Jean Baptiste D. Ettien Department of Soil Sciences Water and Geomaterials University of Felix Houphou&#235t Boigny Abidjan C&#244te d&#8217Ivoire Department of food security and Nutrition Swiss Center for Scientific Research in C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

The cropping system is based on traditional farming in rural areas. In this way, yields of some food crops like yam are very low considering their high need for nutrients. The nutrient-rich land is under high land pressure as it is occupied by cash crops such as oil palm and rubber at the expense of food crops and soil fertility is declining. The study was conducted in Grand-Lahou to assess the effect of organic matter provided by legumes in increasing yam yield. The randomized complete block design included four (4) treatments: Arachis hypogaea + yam association (T1), Acacia mangium + yam association (T2), Arachis + Acacia mangium + yam association (T3) and pure yam crop (T0). The parameters measured were: the soil nutrients content, the rate of mineralization of organic matter through the C/N ratio as well as the yield of yam through different techniques that allowed the objective of the study to be achieved. It was noted a slight improvement of nitrogen and organic carbon in all treatments with a higher value recorded in the T2 treatment. The C/N ratio decreased to 12 in all treatments compared to the control, which reflects a normal decomposition of the organic matter. Treatment T1 increased yam yield (8.4 t/ha) in contrast to treatments T2 (4.1 t/ha) and T3 (2.8 t/ha). Legume-based treatments T2 and T3 were associated with a significant decrease in yam yield, resulting in losses of −46.34% to −25.09%, while treatment T1 resulted in a gain of 28.57%. As a result, the treatments involving legumes contributed to normalizing the organic matter content of the soil. The simultaneous association of these two legumes led to a decrease in yam production, contrary to the treatment associating only groundnut.

关键词： Legumes Organic Matter Yam Yield Côte d’Ivoire

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Determination and Quantification of Proximate and Mineral Composition for 20 Improved Sorghum Varieties Grown in Machache, Lesotho

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food and Nutrition Sciences 2024年第8期15卷 744-758页

作者： Malefane Ts’ephe Puleng Letuma Karabelo Khomongata Fisseha Itanna Mamoipone Sebitia Monica Lephole Pitso Masupha Department of Crop Science Faculty of Agriculture National University of Lesotho Maseru Lesotho Department of Soil Science and Natural Resource Management Faculty of Agriculture National University of Lesotho Maseru Lesotho School of Interdisciplinary Research and Graduate Studies (SIRGS) University of South Africa (UNISA) Pretoria South Africa Department of Agricultural Research (DAR) Ministry of Agriculture Food Security and Nutrition Maseru Lesotho

Twenty varieties of improved sorghum were grown in Machache at the Department of Agricultural Research station, located (29˚22'60"S and 27˚52'0"E) in the central foothills of Lesotho in Maseru district. The varieties were planted in a randomized complete block design. At maturity, they were harvested, dried, threshed, milled and analyzed in the crop science laboratory at the National University of Lesotho. The proximate and mineral contents were analyzed from samples in a completely randomized design with three replicates. The proximate composition parameters measured were crude proteins, crude fiber, crude fat, moisture content, and carbohydrates. The minerals analyzed were, phosphorus, sodium, calcium, magnesium, potassium, copper, zinc, iron, and magnesium. The results showed the nutritional contents ranging from (4.7% - 16.16%), (0.35% - 2.10%), (1.25% - 4.00%), (71.60% - 84.06%), (5.53% - 10.18%), for protein, fat, fiber and carbohydrate, and moisture content, respectively. Mineral content ranged from (1342.96 - 3500.34 mg/kg), (25.97 - 185.25 mg/kg), (50.71 - 511.71 mg/kg), (29.35 - 4542.13 mg/kg), (577.19 - 3041.52 mg/kg), (0.25 - 4.07 mg/kg), (1.96 - 18.61 mg/kg), (67.14 - 122.96 mg/kg), (4.73 - 11.39 mg/kg) for phosphorus, sodium, calcium, magnesium, potassium, copper, zinc, iron, and manganese respectively. The following varieties were found to have the highest and appreciable amounts of nutrients and minerals that are crucial in the country diet;protein content was KARI Mtama 1, zinc, IESX 16 2533-SB-SSI-19, and iron IESX 16 2535-SB-SSI-34.

关键词： Varieties Sorghum Proximate Mineral

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Greenhouse gas emissions mitigation and economic viability of sugar crops in China

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Frontiers of Agricultural Science and Engineering 2024年第3期11卷 397-408,I0004页

作者： Linsheng YANG Xiaozhong WANG Wushuai ZHANG Prakash LAKSHMANAN Yan DENG Xiaojun SHI Xinping CHEN Fusuo ZHANG Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and EnvironmentSouthwest UniversityChongqing 400716China Key Laboratory of Low-carbon Green Agriculture in Southwestern China(Ministry of Agriculture and Rural Affairs) Southwest UniversityChongqing 400716China Rice Research Institute Anhui Academy of Agricultural SciencesHefei 230031China Key Laboratory of Sugarcane Biotechnology and Genetic Improvement(Guangxi) Ministry of Agriculture and Rural AffairsGuangxi Key Laboratory of Sugarcane Genetic ImprovementGuangxi Academy of Agricultural SciencesSugarcane Research InstituteGuangxi Academy of Agricultural SciencesNanning 530007China Center for Resources Environment and Food SecurityChina Agricultural UniversityBeijing 100193China

Climate change mitigation is a major challenge of human ***,to this end,many countries including China are committed to achieving carbon neutrality within a few *** is a major sugarcane and sugar beet producing country and has one of the largest carbon footprint for sugarcane and sugar beet production globally.A comprehensive study was conducted on sugarcane and sugar beet crops grown in China for greenhouse gas(GHG)emissions mitigation potential,economic crop production from a sustainable sugar production ***-term trend analysis showed that yield and GHG emissions of sugarcane and sugar beet crops increased but the ratio of income to cost *** equation model analysis revealed nitrogen fertilizer and labor as the major drivers of GHG emissions for both sugarcane and sugar *** sugarcane and sugar beet,the path coefficient of N fertilizer were‒0.964 and‒0.835 and that of labor were 0.771 and 0.589,*** transitioning the current cropping system to an improved model with optimized labor,N input and machinery use,the GHG emissions and total annual cost of sugarcane and sugar beet production can be reduced by 32%and 24%,respectively,by 2030,compared to a business-as-usual *** is the first integrated and comparative study of environmental and economic sustainability of sugarcane and sugar beet production in *** findings will enable all stakeholders of Chinese sugarcane and sugar beet industries to transform them into environmentally and economically sustainable sugar production.

关键词： Economic profits GHG emissions labor input nitrogen input sugar

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