CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Meysam Madadi,Kanglu Zhao,Youmei Wang,Yanting Wang,Shang-wen Tang,Tao Xia,Nengzhou Jin,Zhijun Xu,Guanhua Li,Zhi Qi,Liangcai Peng,Zhiyong Xiong
Potato is a major food crop with enormous biomass straw, but lignocellulose recalcitrance causes a costly bioethanol conversion. Here, we selected the cytochimera (Cyt) potato samples showing significantly-modified lignocellulose and much increased soluble sugars and starch by 2–4 folds in mature straws. Under two pretreatments (8 min liquid hot water; 5% CaO) at minimized conditions, the potato Cyt straw showed complete enzymatic saccharification. Further performing yeast fermentation with all hexoses released from soluble sugars, starch and lignocellulose in the Cyt straw, this study achieved a maximum bioethanol yield of 24 % (% dry matter), being higher than those of other bioenergy crops as previously reported. Hence, this study has proposed a novel mechanism model on the reduction of major lignocellulose recalcitrance and regulation of carbon assimilation to achieve cost-effective bioethanol production under optimal pretreatments. This work also provides a sustainable strategy for utilization of potato straws with minimum waste release.
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高影响因子
MOLECULES
·
2021
·Vol. 26
·期 13
·3870
·
IF 4.412
Jingyang Li,Fei Liu,Hua Yu,Yuqi Li,Shiguang Zhou,Yuanhang Ai,Xinyu Zhou,Youmei Wang,Lingqiang Wang,Liangcai Peng,Yanting Wang
Banana is a major fruit crop throughout the world with abundant lignocellulose in the pseudostem and rachis residues for biofuel production. In this study, we collected a total of 11 pseudostems and rachis samples that were originally derived from different genetic types and ecological locations of banana crops and then examined largely varied edible carbohydrates (soluble sugars, starch) and lignocellulose compositions. By performing chemical (H2SO4, NaOH) and liquid hot water (LHW) pretreatments, we also found a remarkable variation in biomass enzymatic saccharification and bioethanol production among all banana samples examined. Consequently, this study identified a desirable banana (Refen1, subgroup Pisang Awak) crop containing large amounts of edible carbohydrates and completely digestible lignocellulose, which could be combined to achieve the highest bioethanol yields of 31–38% (% dry matter), compared with previously reported ones in other bioenergy crops. Chemical analysis further indicated that the cellulose CrI and lignin G-monomer should be two major recalcitrant factors affecting biomass enzymatic saccharification in banana pseudostems and rachis. Therefore, this study not only examined rich edible carbohydrates for food in the banana pseudostems but also detected digestible lignocellulose for bioethanol production in rachis tissue, providing a strategy applicable for genetic breeding and biomass processing in banana crops.Keywords:banana;pseudostem;rachis;biomass pretreatments;enzymatic saccharification;bioethanol fermentation;cellulose crystallinity
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JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Meysam Madadi,Youmei Wang,Chengbao Xu,Peng Liu,Yanting Wang,Tao Xia,Yuanyuan Tu,Xinchun Lin,Bo Song,Xiaoe Yang,Wanbin Zhu,Deqiang Duanmu,Shang-wen Tang,Liangcai Peng
Improving biomass enzymatic saccharification is effective for crop straw utilization, whereas phytoremediation is efficient for trace metal elimination from polluted agricultural soil . Here, we found that the green proteins extracted from Amaranthus leaf tissue could act as active biosurfactant to remarkably enhance lignocellulose enzymatic saccharification for high bioethanol production examined in eight grassy and woody plants after mild chemical and green-like pretreatments were performed. Notably, this study estimated that total green proteins supply collected from one-hectare-land Amaranth plants could even lead to additional 6400–12,400 tons of bioethanol, being over 10-fold bioethanol yield higher than those of soybean seed proteins and chemical surfactant. Meanwhile, the Amaranth green proteins were characterized as a dominated biosorbent for multiple trace metals (Cd, Pb, As) adsorption, being 2.9–6 folds higher than those of its lignocellulose. The Amaranth plants were also assessed to accumulate much more trace metals than all other plants as previously examined from large-scale contaminated soils. Furthermore, the Amaranth green proteins not only effectively block lignin to release active cellulases for the mostly enhanced biomass hydrolyzes, but also efficiently involve in multiple chemical bindings with Cd, which should thus address critical issues of high-costly biomass waste utilization and low-efficient trace metal remediation.
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高影响因子
Journal of Thermal Science
·
2021
·Vol. 30
·期 6
·2002-2014
·
IF 2.438
Shao Xuefeng,Yang Sheng,Chen Chenlin,Fan Liwu,Yu Zitao
The temperature-dependent rheological behaviors of five selected binary eutectic mixture sugar alcohols, with great potential for latent heat storage in the range of 353.15 K to 523.15 K, were investigated. It was found that the rheological behaviors of the mixture sugar alcohols depend on those of the pure compounds as well as their molar ratios. The two mixtures of xylitol (75 mol%)+erythritol and erythritol (84 mol%)+d-mannitol behave like pseudoplastic fluids with typical non-Newtonian shear-thinning behaviors, as indicated by the power law index of 0.99 (<1). The mixture of d-mannitol (70 mol%)+d-dulcitol is a nonlinear Bingham fluid, exhibiting a slight yield stress (0.001 Pa to 0.01 Pa) at low shear rates. The rest two mixtures containing the cyclic-structured inositol behave like Herschel-Bulkley fluids. The infinite shear viscosities of the eutectic mixtures over the entire temperature range appear to be higher than those of their respective pure compounds, except for inositol. The mixture of xylitol (75 mol%)+erythritol at its melting point shows higher dynamic viscosity of about 0.546 Pa·s than the values of about 0.396 Pa·s and 0.035 Pa·s for xylitol and erythritol, respectively. In addition, the activation energies of viscous flow of the mixtures, as determined by fitting the dynamic viscosity-temperature curves using the Arrhenius model, also exhibit higher values than those of their pure compounds. The activation energy of viscous flow of the mixture xylitol (75 mol%)+erythritol was determined to be about 92 400 J/mol in the supercooled liquid state, while the supercooled liquid xylitol and erythritol have much lower values of 83 500 J/mol and 51 900 J/mol, respectively. Both the increased dynamic viscosities and activation energies of viscous flow can result in deteriorated crystallization performance during latent heat retrieval.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2020
·Vol. 222
·期 3
·2000379
·
IF 2.335
Hanhong Li,Zhenqi Cheng,Yang Wang,Dong Zhou,Mingji Su,Xianxun Wang,Peixin He,Yuhong Zhang
As matters stand, chemotherapy is faced with high toxic and side effects, high risks, and long treatment cycles. Thus, stability, high encapsulation efficiency, intelligent controllability, and good biocompatibility are of great importance for drug delivery vehicles. Herein, a novel doxorubicin hydrochloride (DOX)-loaded micelle-like nanoparticle with pH responsive star-shaped polycaprolactone–polyethyleneglycol copolymer (sPCL–PEG–CT, sPP) is developed through esterification with inositol–polycaprolactone (sPCL) and carboxylated polyethylene glycol (TC–PEG–CT). sPP nanomicelles (sPP NMs) have a high encapsulation efficiency of greater than 85%, an average size of 95 nm, and a zeta potential of −18 mV. In addition, in vitro release tests show that ≈70% of the drug is released from sPP/DOX NMs into phosphate buffer saline solution (PBS) (pH 5.0) at 37 °C for 12 h. More importantly, the cumulative release is ≈90% for 170 h, displaying a more sustainable drug release behavior. The work explores a new synthesis route of star-shaped polycaprolactone–polyethyleneglycol copolymer NMs. The sPP NMs have a promising future in drug carrier, especially for hydrophobic drugs.
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ENVIRONMENTAL RESEARCH
·
2020
·
IF 5.715
Jun Zhu,Lei Tang,Shanlei Qiao,Lijuan Wang,Yiming Feng,Li Wang,Qian Wu,Ping Ding,Zhan Zhang,Lei Li
Methylmercury (MeHg) is a ubiquitous environmental toxicant with neurotoxic effects. Although its neurotoxicity had been more studied, the role of gut microbiota remains unclear. In this study, adult zebrafish and larvae were exposed to MeHgCl at the dose of 0, 1 and 10 ng/mL. MeHgCl exposure impaired the locomotor activity via upregulation of apoptosis and autophagy related genes in the brain. Intestinal and cerebral metabolome indicated that phosphatidylinositol signaling system and inositol phosphate metabolism pathways were significantly impacted in adult zebrafish upon MeHgCl exposure. The levels of myo-inositol (MI) in the intestine and brain were decreased and positively correlated. 16 S rRNA sequencing data from adult zebrafish showed that MeHgCl exposure also shifted the structure of gut microbiota and reduced the relative abundance of Bacteroidetes and Proteobacteria , which were further identified at genus level as Aeromonas and Cetobacterium . Further functional analysis indicated that MeHgCl disrupted inositol phosphate metabolism of gut microbiota. Notably, MI supplementation restored the impairment of locomotor activity and inhibited the upregulation of apoptosis and autophagy related genes, such as bcl-2 and atg5 . Thus, this study not only revealed the key role of gut microbiota in MeHgCl-mediated neurotoxicity but also gave new insights into antagonizing its toxicity.
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CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Yue Su,Liang Li
The structural characterization and antioxidant activity of four Auricularia polysaccharides (A.cornea ACP)、A.auricula(AAP)、A.polytricha (APP) and M.fungus(MFP)) were studied in this paper. The results shown: polysaccharides of four Auricularia were mainly composed of mannose and galactose, all polysaccharides contained uronic acid and pyran ring structure with spectroscopy and NMR analysis. There was a significant difference in the total antioxidant capacity and APP was significantly higher than the other polysaccharides. The ability of APP to scavenge DPPH radicals and hydroxyl radicals was significantly higher than that of other polysaccharides, respectively. The molecular weight was significantly positively correlated with DPPH radicals, superoxide anion radicals and hydroxyl radicals. Total antioxidant capacity was significantly negatively correlated with fucose and galactose. The result indicated that fucose and galactose jointly determine total antioxidant capacity. The polysaccharide from four Auricularia had good oxidation resistance and could be used as natural antioxidants.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Shangguang Du,Jun Luo,Xutang Tu,Zuozuo Ai,Dong Wu,Zhengrong Zou,Liping Luo
Low temperatures significantly impact on rice ( Oryza sativa ) yield and quality. Traditional metabolomic techniques, often involving time-consuming chromatography-mass spectrometry procedures, are currently in use. This study investigated metabolomic responses of rice seedlings under low-temperature stress using nanoliter electrospray ionization mass spectrometry (nanoESI-MS) in combination with multivariate analysis . Results revealed distinct metabolic profiles in ‘Qiutianxiaoting’ ( japonica ) and ‘93-11′ ( indica ) rice seedlings. Among the 36 identified compounds in rice, seven key metabolites, comprising l -glutamic acid, asparagine, tryptophan, citric acid, α-linolenic acid, malic acid, and inositol, were identified as responsive to cold stress. Notably, malic acid content reached 1332.40 μg/g dry weight in Qiutianxiaoting and 1444.13 μg/g in 93-11. Both the qualitative and quantitative results of nanoESI-MS were further confirmed through gas chromatography-mass spectrometry validation. The findings highlight the potential of nanoESI-MS for rapidly characterizing crucial metabolites across diverse plant species under exposure to stress.
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高影响因子
BIOMEDICAL CHROMATOGRAPHY
·
2023
·Vol. 37
·期 12
·e5743
·
IF 1.8
Wei-Han Yang,Jing-Wen Hao,Nai-Dong Chen,Jiao Li
The determination of monosaccharides is crucial for studying the structure of polysaccharides and the composition of free monosaccharides in living organisms. Based on previous derivatization gas chromatography–mass spectrometry (GC–MS) methods, we aimed to develop a novel analytical protocol for better quantifying monosaccharides. In this study, sugar alcohol acetylation, saccharonitrile acetylation, silylation and a combination of sugar alcohols acetylation and saccharonitrile acetylation were compared. The optimal method was verified with the monosaccharide determination of four polysaccharides and four free monosaccharides from Dendrobium . The results showed that the novel combined derivatization method was superior to the other three methods in terms of content analysis of monosaccharides. Furthermore, it possessed good linearity (all calibration curves showed relative coefficients ≥ 0.999), sensitivity, precision (relative standard deviation < 2%), and accuracy (recovery, 95.7–105%). Finally, the novel method established in this study was successfully employed in determining the monosaccharide composition of four polysaccharides and four free monosaccharide samples from Dendrobium .
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 42
·e54551
·
IF 3
Siyuan Lu,Gang Wu,Fangfang Niu,Yangdong Liu,Xingsheng Liu,Wan Xu,Zhenbin Chen
Increasing social awareness concerning the design of excellent performance toughening agents to curb the adverse effects of insufficient toughness on the wide range of applications of epoxy resin (EP). Herein, a small amount of sorbitol was doped into carbocyclic inositol as a core monomer, and bisphenol-A and epichlorohydrin were used to produce epoxide-terminated hyperbranched polyether by one-pot preparation method. After that, the prepared polymer was used as modifier to improve the toughness and strength of petroleum-based EPs. Results demonstrated that after adding the homemade epoxy-terminated hyperbranched polyether (EHBPE) to the EP, the polyether prepared with the ratio of sorbitol and inositol displayed significant advantages compared with the polyether with monomers using only sorbitol and inositol, respectively. In particular, the impact, and tensile strengths of EHBPE-IS/EP cured sample with EHBPE-IS loading at 20% were increased by 197.5%, 139.6%, respectively, compared with those of neat EP. In brief, EHBPE-IS, a member of the family of EHBPEs, provided a facile method for the preparation of bifunctional modifier for tough and strong EP with promising industrial applications.
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Sustainable Energy & Fuels
·
2023
·Vol. 7
·期 16
·3981-3992
·
IF 5.6
Yuanhong Li,Songping Mo,Junhao Chen,Bo Xiao,Lisi Jia,Ying Chen
The utilization of sugar alcohols as phase change materials (PCMs) in medium-temperature solar thermal applications has significant potential, yet their utilization is limited by their low thermal conductivity and potential leakage during the phase change process. In order to achieve greater thermal conductivity and higher photothermal conversion efficiencies, this study proposes the incorporation of MXenes within inositol nanocapsules. The structures and thermal properties of the resulting nanocapsules were methodically examined through Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible (UV-vis) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC) and the Brunauer–Emmett–Teller (BET) method. The thermal conductivity of the nanocapsule suspension was measured using a hot disk thermal constant analyzer. Furthermore, the temperature variations of the nanocapsule suspension, subjected to simulated solar irradiation, were measured and the photothermal conversion efficiencies were calculated. The findings of the study reveal that MXene doping had negligible impact on the latent heat of the nanocapsules. However, it was found that the thermal conductivity of the nanocapsule suspension was enhanced by 76.0% in comparison to that of the inositol suspension that contained an equivalent mass fraction of 2.0%. Moreover, the photothermal conversion efficiency of the nanocapsule suspension exhibited a 67.3% increase relative to that of the inositol suspension. These results indicate that the MXene-doped sugar alcohol nanocapsules demonstrate promising potential for enhancing the efficacy of solar thermal utilization.
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Chemical and Biological Technologies in Agriculture
·
2023
·Vol. 10
·期 1
·1-12
·
IF 6.6
Zheng Lei,Zhu XingYi,Wang Jialu,Su Weike
Mechanochemical-assisted extraction (MCAE) and mechanochemical-assisted enzyme catalysis (MCAEC) methods were developed for extraction and enzymatic hydrolysis of calcium phytate from defatted rice bran, respectively.The MCAE conditions were optimized by response surface methodology: 10% sodium carbonate as the solid reagent, 33 min grinding time, 18:1 ball–material ratio, 330 rpm ball milling speed, and pH 5.5 extraction. Under these conditions, the yield of calcium phytate was 97.0 mg/g. The MCAEC conditions were optimized as follows: 2% enzyme addition, MM400 milling time 36 min, PM400 milling speed 262 rpm, MM400 milling frequency 27 Hz, and the addition of pH 5.5 sodium acetate buffer 3 mL. Under these conditions, the hydrolysis rate of calcium phytate was 39.7%.Compared with traditional extraction and enzymatic hydrolysis methods, MCAE and MCAEC could obtain higher yields and hydrolysis rates, respectively.
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危险品化学品经营许可证（带存储）