INDUSTRIAL CROPS AND PRODUCTS
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2020
·
IF 4.244
Zi-Jian Huang,Guo-Jian Feng,Kai-Peng Lin,Fu-Long Pu,Yan-Ming Tan,Wei-Chien Tu,Ya-Li Han,Xue-Dan Hou,Hong-Mei Zhang,Yi Zhang
The conversion of crop wastes into fermentable sugars and other chemicals mediated by deep eutectic solvents (DESs) has attracted significant attention. In this work, lactic acid, the constituents of DES, was proved to be a harmful inhibitor for cellulase during the conversion of rice straw to fermentable sugars. Nevertheless, the study here also demonstrated that depending on conditions, lactic acidic–choline chloride (LC) can be utilized for pretreatment and saccharification in a one-pot (PSOP) process with high sugar release. The PSOP process performed at 120℃ for 3 h, 15% biomass loading, a 0.30 mol/L LC with a 40 FPU enzymes saccharification system, achieved a total sugar yield of 75.7%. This value is significantly higher than the 49.9% yield achieved in traditional solid-liquid separation (SLS) processes due to the excellent xylose yield (75.7%). This high total sugar yield is attributed to the retention of the xylooligosaccharide, which was directly utilized in the PSOP process. In addition, the techno-economic analysis demonstrates the potential feasibility of a LC based PSOP process in industrial application.
研究领域:
生物技术
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2018
·
IF 3.909
Qiqi Ma,Ramesh Kumar Santhanam,Zihan Xue,Qingwen Guo,Xudong Gao,Haixia Chen
This study aimed to optimize the suitable drying method to obtain high yield of polysaccharides from mulberry leaves and to determine their structural characterization and antioxidant activities. The effects of three different drying methods such as air dried, hot air dried (55 °C, 65 °C & 75 °C) and freeze dried on the physicochemical and antioxidant properties of mulberry leaves polysaccharides were studied using gas chromatography, high performance gel permeation chromatography, Fourier transform infrared spectroscopy, scanning electron micrography and antioxidant assays. Results revealed that pre-treatment remarkably influenced the changes in their physicochemical and antioxidant properties. In comparison with the other drying techniques, freeze dried polysaccharides showed more rough morphologies and significant antioxidant property. The yield of polysaccharides from the freeze dried sample was about 28.88% higher than the yield of hot air dried sample. The MDA activity of freeze dried sample was about 95.45%. Overall, the results suggested that the freeze drying technique was the appropriate method to extract polysaccharides from mulberry leaves that offered significant biological properties.
研究领域:
食品科学
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植物化学
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农业工程
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2015
·
IF 2.837
Huanfei Xu,Guang Yu,Xindong Mu,Chunyan Zhang,Paul DeRoussel,Chao Liu,Bin Li,Haisong Wang
A modified alkali pretreatment (MAP) process was established in both lab-scale and pilot-scale, based on the on-line production and utilization of lignosulfonate for improving enzymatic saccharification of corn stover. Sodium lignosulfonate (SLS) produced by directly sulfonating lignin in spent liquor separated from alkali pretreatment was reused in the next cycle of alkali pretreatment. The results showed that, by using 11 wt% NaOH, 2 wt% SLS and 0.1 wt% anthraquinone (AQ) in MAP, delignification rate and final total sugar yields could reach about 78% and 80% respectively, which were about 6% and 9% higher compared to the blank conventional NaOH pretreatment under the same conditions. In addition, sulfonation degree of SLS had linearly impact on the final total sugar yields.
研究领域:
生物化工
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生物技术
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可再生能源
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DOI
高影响因子
FOOD SCIENCE AND BIOTECHNOLOGY
·
2023
·
IF 2.9
Jin Chengyu,Wang Lingyun,Liu Xiaoying,Lu Yuanchao,Yu Ningxiang,Nie Xiaohua,Ye Qin,Meng Xianghe
Gardenia jasminoides Ellis, a representative for “homology of medicine and food”, can be used to produce pigment and edible oil. Here, aqueous enzymatic extraction (AEE) combined with puffing pre-treatment was explored to prepare oil from gardenia seeds. Both wet-heating puffing (WP) at 90 °C and dry-heating puffing (DP) at 1.0 MPa facilitated the release of free oil by AEE, resulting in the highest free oil yields (FOY) of 21.8% and 23.2% within 3 h, much higher than that of un-puffed group. Additionally, active crocin and geniposide were also completely released. The FOY obtained was much higher than mechanical pressing method (10.44%), and close to solvent extraction (25.45%). Microstructure analysis indicated that gardenia seeds expanded by dry-heating puffing (1.0 MPa) had a larger, rougher surface and porous structure than other groups. Overall, AEE coupled with puffing pre-treatment developed is an eco-friendly extraction technology with high efficiency that can be employed to oil preparation. Graphical abstract
研究领域:
食品科学
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生物技术
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化学工程
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Li Peiyuan,Hu Songnan,Huang Suyue,Zhang Saisai,Hu Hui-Chao
Increasing kraft pulp yield has long been a critical objective in the pulp and paper industry. In recent years, methyl mercaptan (MeSH) has been recognized as an effective additive for enhancing kraft pulping yields in both softwood and hardwood. To elucidate the underlying mechanisms, this study investigates the impact of MeSH introduction on bamboo kraft pulping, with a focus on understanding its role in enhancing delignification efficiency and protecting carbohydrates. A comparative analysis on kraft lignin reveals that MeSH introduction significantly reduces lignin’s molecular weight by approximately 30%, and the phenolic hydroxyl group content drastically increases by 21.7%. That promotes the dissolution of kraft lignin in pulping liquors, thus accelerating delignification and shortening H-factor by 29.5% and lowering alkali charge by 2%. Analysis of polymerization degree (with a 56% reduction in its decrease) and reducing end group content (decreasing by 12%) in cooked dissolving pulps verifies that MeSH inhibits both carbohydrate peeling reactions and alkaline hydrolysis, and the primarily contribution is on the protective effect on cellulose (82.1%). Therefore, we believe that the main mechanism using MeSH as additives includes two aspects, i.e., accelerating delignification and preventing carbohydrate degradation, which collectively promotes the yield increase of bamboo kraft pulp by 2.8%.
研究领域:
制浆化学
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生物质转化
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林产化工
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高分子降解
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纤维素科学
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产品关联
DOI
高影响因子
FOOD AND BIOPRODUCTS PROCESSING
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2020
·
IF 3.726
Yupeng Lin,Hong He,Qun Huang,Fengping An,Hongbo Song
Low-temperature soluble and soft gelation (LT-SG) pectin belonging to special gum is an important food additive. Flash extraction optimization of pectin from passion fruit ( Passiflora edulis f. flavicarpa ) peel at low temperature (50 °C) by response surface methodology and LT-SG properties was investigated in the present study. Under the optimized conditions of a rotation speed of 5000 r/min, extraction time of 9 min, and the liquid–solid ratio of 42:1 mL/g, the pectin yield was 7.52%. The DE value of 57.02% indicated it was high methoxyl pectin, which easily dissolved at a low temperature (70 °C). Gel texture analysis revealed that the soft gelation properties were depended on the sucrose concentration and pH in the pectin solution. Both adding sucrose and decreasing pH refined gel network structure, as results, the gel texture was strengthened.
研究领域:
食品科学
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化学工程
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农业科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2021
·
IF 7.514
Yungang Cao,Baoling Li,Xin Fan,Jiankang Wang,Zhenbao Zhu,Junrong Huang,Youling L. Xiong
The influence of combined Lysine (Lys) and transglutaminase (TG) on the conformation and gelling properties of oxidatively damaged myofibrillar protein (MP) was investigated. The addition of Lys (5 mM) significantly increased the α-helix content (by 47.8%) and decreased the particle size of oxidatively damaged MP, and improved the cooking yield (by 16.8%) and the breaking strength of MP gels (by 65.5%). The treatment with TG (E:S = 1:500) led to a slightly reduced α-helix content but improved breaking strength (by 41.8%) and cooking loss (by 13.3%) of the gels. Their combination (Lys + TG) showed the greatest and synergistic overall improvement, with the set gel displaying a fine, smooth and compact network structure. Notably, the gelling ability of oxidatively damaged MP upon Lys + TG treatment was significantly stronger than that of non-oxidized MP far exceeding its recovery. Therefore, significantly enhanced gelling properties of oxidatively damaged MP can be attained through the combination Lys and TG.
研究领域:
食品科学
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蛋白质化学
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生物技术
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产品关联
DOI
PubMed
高影响因子
Journal of Oleo Science
·
2022
·
IF 1.628
Anning Liu,Huijuan Jing,Xiaojing Du,Chaoyang Ma,Hongxin Wang
In this study, the recovery of pecan nut kernel oil (PNKO) obtained by mechanical pressing (MP) was compared with that obtained by ultrasonic-assisted aqueous enzymatic extraction (UAAEE). At the same time, contents of substances with proven bioactivity, fatty acid compositions, physicochemical properties and antioxidant activities of PNKO were also assessed. Obviously, the oil yield obtained by UAAEE (71.32%) was higher than that obtained by MP (56.81%). Therefore, Plackett-Burman design (PBD), as well as Box-Behnken design (BBD), further optimized the UAAEE process, and the highest oil yield of 78.83% was acquired under the following conditions: incubation time of 2 h, the mixed enzyme (cell ulase+hemicellulase+pectinase+neutrase, w/w/w/w=1/1/1/1) concentration of 2.9%, liquid-solid ratio of 4 mL/g, pH of 4, particle size of 300 μm, ultrasonic time of 20 min, ultrasonic power of 432 W and reaction temperature of 53°C. The PNKO obtained by the two methods possessed similar fatty acid composition, but that obtained by UAAEE had comparatively low acid value and peroxide value. Moreover, rich content of total phenolics, squalene and phytosterols, as well as strong scavenging activities against DPPH and ABTS+ free radicals, were also contained in the PNKO obtained by UAAEE. These results demonstrated that UAAEE was an efficient method to acquire pecan nut kernel oil with excellent quality and high recovery.
研究领域:
食品科学
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生物技术
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化学工程
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农业工程
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Lili Wang,Huixian Dong,Keying Zheng,Nasha Zeng,Yinhe Duan,Xi Wang,Minghua Wu
Future developments in the printing and dyeing industry will involve greenisation and personalisation. Less/no water digital technology has drawn much attention over traditional printing and dyeing for reducing carbon and emissions. Based on the solubility parameter difference between disperse dyes and monomers, divinyl polysiloxane modified polyacrylate (PSMA) with the directional migration effect for disperse dyes was prepared herein via mini-emulsion polymerisation. PSMA was used as wash-free polymer additive in the digital jet dyeing of polyester fabrics with disperse dyes, which yielded wash-free dyed fabrics with high color yield and color fastness. The results showed that PSMA achieved the optimum overall performance at a molar ratio of octamethylcyclotetrasiloxane to 1,3-divinyltetramethyldisiloxane 44:1 and divinyl polysiloxane dosage of 4 wt%. PSMA had the best tensile properties, good flexibility, certain hydrophobicity and high directional migration of disperse dyes. When the PSMA dosage was 9 wt% in the wash-free ink, the front and back color yield of the wash-free dyed fabric were 18.23 and 13.56, respectively. Compared with the fabric dyed with pure liquid disperse red, the front color yield of the wash-free dyed fabric increased by about 35.2 % and the back color yield had a little change. Its color fastness to dry/wet rubbing were improved from grade 3 to 4 and from grade 2–3 to 3, respectively. The handle of the wash-free dyed fabric basically maintained the level of original fabric.
研究领域:
纺织工程
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材料科学
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染整技术
·
环境科学
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Yiyi Lv,Li Yao,Meijuan Qiu,Lian Li,Shuyi Qiu,Yuanyuan Liu,Chaoyang Wei
This research follows the current trend of value addition to wild unexploited resources through scientific and technological means. The effect of extraction techniques on the structural and functional characterization of active polysaccharides was investigated, filling the existing knowledge gap. Six extraction techniques (alkaline, enzymatic, ultrasound-assisted, hot water, microwave-assisted, and acidic) were applied to obtain Pyracantha fortuneana polysaccharide (PFP) from the fruit of P. fortuneana . The yield, physicochemical properties, structural characteristics, and bioactivities of the six polysaccharides, namely Al-PFP, E-PFP, U-PFP, H-PFP, M-PFP, and Ac-PFP, were comparatively analyzed. The results showed that the six polysaccharides were pectic polysaccharides with similar functional groups and excellent thermal stability, containing abundant branched chains. The molecular weight ranged from 34.33 kDa (U-PFP) to 247.81 kDa (H-PFP). Among them, Ac-PFP had the highest yield (12.30%), uronic acid content (73.15%), and galacturonic acid content (57.89%). In terms of biological functional analysis, PFPs exhibited strong antioxidant and α-glucosidase inhibitory activities, particularly Ac-PFP, which showed the highest activity. Hence, this study highlights that alkaline, enzymatic, ultrasonic, microwave, and acidic methods degrade polysaccharides differently than hot water extraction while causing changes in microstructure and properties. Furthermore, alterations in the molecular weight and monosaccharide composition resulting from the extraction method are the primary factors influencing the antioxidant and hypoglycemic activity of PFPs.
研究领域:
药用植物学
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食品科学
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生物化学
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植物科学
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产品关联
DOI
高影响因子
CHEMISTRY & BIODIVERSITY
·
2024
·
IF 2.3
Linhong He,Lijuan Zhang,Xi Bai
This study evaluated the effects of three extraction methods, hydrodistillation (HD), steam distillation (SD), and lipophilic solvent extraction (LSE), on the yield, chemical composition, and in vitro / in silico biological activities of Schizonepeta tenuifolia (Benth.) Briq essential oil (STEO). The highest yield of STEO was obtained by HD (0.750±0.040%), followed by SD (0.440±0.020%) and LSE (0.350±0.030%). Although their contents varied, menthone and pulegone predominated in HDEO, SDEO, and LSEO. HDEO displayed the strongest antioxidant ability, with a 2,2-diphenyl-1-picrylhydrazyl (DPPH) IC50 value of 14.164±0.090 mg/mL and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) value of 0.326±0.023 mg/mL. SDEO demonstrated the highest antimicrobial activity against Staphylococcus aureus and Escherichia coli and HDEO the highest potent anti-inflammatory activity. The molecular docking of menthone and pulegone demonstrated strong binding to inflammatory targets, including prostaglandin-endoperoxide synthase 1 (PTGS1) and 2 (PTGS2) and tumor necrosis factor alpha (TNF-α). In short, the extraction method significantly affected the yield, composition, and biological activity of STEO.
研究领域:
药用植物学
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精油化学
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药理学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2023
·Vol. 58
·期 12
·6386-6398
·
IF 3.3
Zi-wei Liu,Jun-ru Qi,Ya-ting Song,Cheng-wei Ruan,Jin-song Liao
Summary The properties of pectin extracted by enzyme-assisted nitric acid (EAE-N) and pectin extracted by enzyme-assisted oxalic acid (EAE-O) were analysed and compared with pectin extracted by nitric acid (AE-N) and pectin extracted by oxalic acid (AE-O) systematically. The yield of pectin obtained by the enzyme-assisted acid method (23.73% ~ 25.60%) was significantly higher than that by acid extraction method (19.75% ~ 20.60%). Monosaccharide analyses demonstrated that the enzyme-assisted acid method was able to attain more branched rhamnogalacturonan I (RG-I) regions (36.59% ~ 42.06%) than using acid solely (31.01% ~ 34.58%). Fourier transform infrared spectroscopy (FT–IR) and nuclear magnetic resonance ( 1 H NMR) analyses indicated that there was no obvious difference in the characteristic structure of pectin. The atomic force microscopy (AFM) images revealed that EAE-N and EAE-O had more short side chains and cross-link compared with AE-N and AE-O. Thermogravimetric analysis (TGA) shows that EAE-N and EAE-O have good thermal stability. All pectin samples showed a shear-thinning fluid flow behaviour and an elastic gel-like behaviour. The results suggested that enzyme-assisted acid provided a viable alternative method for the extraction of pectin.
研究领域:
食品科学
·
化学工程
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）