FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Lili Chen,Yuan Hao,Yihan Wang,Gang Wu,Yanjun Zhang,Xu Wang
Breadfruit is rich in starch and pectin. The pectin can alter the digestion process of starch, however, the specific mechanism by which various soluble pectin impact starch digestion remains unclear. The effects of water-soluble pectin (WSP), chelating agent soluble pectin (CSP), and sodium carbonate soluble pectin (SSP) on the digestibility of breadfruit starch were characterized by means of RVA, FTIR, DSC, ITC, SEM and in vitro digestion. The results showed that the three types of pectin could inhibit starch digestion. The addition of CSP increased the resistant starch content from 8.18% to 18.07%, and the addition of SSP increased the slow-digested starch content from 22.55% to 35.24%. The three pectin have different ways in inhibiting starch digestion. They have different principles in inhibiting starch digestion. WSP binds with the dissolved amylose to form a membrane that covers the surface of the starch particles. However, CSP and SSP penetrate into the starch granule during the gelatinization process, blocking the pores on the starch particle surface, thus reducing the starch digestibility.
研究领域:
食品科学
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生物化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Luyao Chen,Yijing Pu,Xu He,Jiankang Cao,Weibo Jiang
In this study, water-soluble fraction (WSF), chelator-soluble fraction (CSF), and sodium carbonate-soluble fraction (NSF) were sequentially fractionated from pear pulp, of which physicochemical properties and hypolipidemic activities in vitro were evaluated. They showed distinct monosaccharide composition, surface morphology, nuclear magnetic resonance (NMR), and Fourier transform infrared (FT-IR) spectrums. WSF and NSF were identified as high methyl-esterified pectic polysaccharides with degrees of methyl esterification (DM) of 85.71 % and 66.67 %, respectively, whereas CSF was low methyl-esterified pectic polysaccharides (47.83 %). WSF, CSF, and NSF all demonstrated low molecular weight, desirable rheological, thermal, antioxidant, and hypolipidemic effects in vitro . It was remarkable that WSF displayed the most excellent inhibition capacity of cholesterol micelles (26.63 %), pancreatic lipase (PL) (91.13 %)/cholesterol esterase (CEase) (53.10 %) activity inhibition, attributed to its highest DM and roughest morphology. CSF and NSF exhibited stronger cholate-binding capacity than WSF, inseparable from higher apparent viscosity and gel ability. On these grounds, different bonding state pectic polysaccharide fractions from pear presented some distinctions in their structural characteristics and functional properties, which might endow them with exploitation in health promotion and dietary supplements.
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
Nanoscale
·
2015
·Vol. 8
·期 7
·3973-3981
·
IF 7.394
Jiangjiang Gu,Donghua Hu,Jin Huang,Xin Huang,Qiuhong Zhang,Xudong Jia,Kai Xi
Carbon dots (CDs) have a wide range of applications and have drawn great interest in the recent decade. The fabrication and control of CDs with different solubilities are still urgent problems for their practical use. In this paper, aqueous soluble and organic soluble CDs (ACDs, OCDs) were produced by one-pot hydrothermal treatment of a designable waterborne polyurethane (WPU) emulsion. The difference in the solubility and fluorescence of these two kinds of CDs was attributed to the various functional groups on the surface, which were derived from the different segment fragments formed by hydrothermal treatment of a block polymer. It was found that the yields of the ACDs and OCDs could be regulated by means of selecting different soft segments in WPU. The more hydrophobic soft segments could result in an increase of the OCDs and a decrease of the ACDs. While the soft segments were hydrophilic or hydrolysable under hydrothermal conditions, only ACDs were obtained. The ACDs had good fluorescence and showed low cytotoxicity for use in multicolour bio-imaging. The OCDs processed good solubility in a wide range of organic solvents and were suitable for preparing fluorescent composite films with polymers.
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2014
·
IF 3.107
Xuefei Cao,Xinwen Peng,Shaoni Sun,Linxin Zhong,Runcang Sun
Hydrothermal conversion is an important thermochemical process to upgrade low-cost lignocellulose into valuable chemicals or fuels. Studies on hydrothermal products compositions and their distributions are of great significance in lignocellulose upgradation. In this work, the major products of bamboo hydrothermally treated at 180–240 °C for 3–60 min and their distributions were comparatively studied. According to the hydrothermal conditions, the hydrothermal products were composed of 37.11–89.98% of solid residues, 4.51–20.41% of water-soluble fractions (WS), and 4.23–16.17% of acetone-soluble fractions (AS). The products in WS fractions mainly consisted of furfural (FF), 5-hydroxymethylfurfural (HMF), and phenolic compounds, while the products in AS fractions were mainly 4-hydroxy-4-methyl-2-pentanone and complex aromatic compounds with multibenzene rings. Additionally, the highest yields of FF (33.4%) and HMF (15.6%) were observed at 200 °C for 60 min and 240 °C for 60 min, respectively.
研究领域:
生物质能
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化学工程
·
林产化工
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DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2017
·
IF 2.572
Rui Wang,Dandan Pu,Yubing Dong,Yehua Sun,Yaqin Fu,Qing-Qing Ni
Silk fibroin (SF) powder was prepared by a nontoxic low-sodium system to avoid introducing massive unwanted chemicals during the SF hydrolysis process. In this study, water-soluble and water-insoluble SF powder, were obtained through lyophilised SF solution by boiling degummed silk fiber in low-concentration Na 2 CO 3 solution with a certain degree of pressure. Compared with traditional SF hydrolysis systems, this study provides a simple and potentially time-saving approach to produce SF powder at a low cost.
研究领域:
生物材料学
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纺织科学
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化学工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2012
·
IF 3.655
Qin Liu,Li Wu,Huiming Pu,Chunyang Li,Qiuhui Hu
The profile and distribution of soluble and insoluble phenolics in 10 rapeseed ( Brassica napus ) varieties were studied in this work. Photometric results show that the soluble total phenolic content (TPC) and the total tannin content (TTC) of rapeseed dehulled flours are much higher than those of rapeseed hulls. Soluble and insoluble phenolics were further analysed by HPLC/MS and MS/MS. For soluble phenolics, seven species were identified and quantified. Sinapine was found to be the major component in both defatted rapeseed hulls and dehulled flours, with its content ranging from 0.93 to 1.76 mg/g and 15.65 to 21.88 mg/g, respectively. For insoluble phenolics, eight phenolic acids were detected in rapeseed hulls, while only two of them were found in their dehulled flours. Sinapic acid and protocatechuic acid, which also were found in dehulled flours, were identified as two major insoluble phenolics in rapeseed hulls. Insoluble TPCs in defatted rapeseed hulls and dehulled flours were shown to be in the similar range.
研究领域:
植物化学
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食品科学
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DOI
PubMed
高影响因子
Molecular Medicine Reports
·
2017
·Vol. 16
·期 6
·9735-9740
·
IF 1.692
Yu Duan,Na Sun,Min Xue,Xiaolan Wang,Hu Yang
The aim of the present study was to report on a complete synthetic approach, namely benzylation-hydrolysis-acylation‑hydrogenation, to the synthesis of regioselectively acylated quercetin analogues using low‑cost rutin as a starting material. Three quercetin analogues, quercetin‑3‑O‑propionate (Q‑pr), quercetin‑3‑O‑butyrate (Q‑bu) and quercetin‑3‑O‑valerate (Q‑va), containing 3‑, 4‑ and 5‑carbon aliphatic acyl chains, respectively, were synthesized and characterized with 1H nuclear magnetic resonance (NMR), 13C NMR and mass spectrometry. Compared with quercetin, all three analogues exhibited improved lipophilicity. The lipophilicity of the analogue increased with increasing acyl chain length. Q‑va exhibited the highest lipophilicity among the three analogues, but a lower water solubility compared with quercetin. By contrast, Q‑pr and Q‑bu exhibited 8.2‑ and 4.7‑fold higher water solubility compared with quercetin, respectively. The in vitro and in vivo studies demonstrated that Q‑pr and Q‑bu were more effective whereas Q‑va was less effective in inhibiting platelet aggregation compared with quercetin. These results indicated that the water solubility and the lipophilicity of the analogues must be improved in order to achieve higher antiplatelet activity, and an optimal acyl chain length is crucial for the synthesized quercetin analogues to be more effective.
研究领域:
药理学
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有机化学
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产品关联
DOI
PubMed
高影响因子
Current Pharmaceutical Analysis
·
2022
·Vol. 18
·期 2
·193-198
·
IF 0.743
Xu Bo-Yang,Zhu Si-Qi,Cheng Xian-Xin,Xu Yu,Liu Ji-Wu
Background: Compound Niuhuang Xiaoyan capsule is a realgar and cinnabar-containing traditional Chinese medicine, the contents of total arsenic and total mercury are found over regulation defined limits. However, only small amounts of arsenic in realgar and mercury in cinnabar are dissolved
in the gastric juice, so the determination of soluble arsenic and soluble mercury is more significant than that of total arsenic and total mercury in Compound Niuhuang Xiaoyan capsule. Objective: To study the contents of total arsenic, total mercury, soluble arsenic and soluble mercury
in Compound Niuhuang Xiaoyan capsule. Methods: Microwave digestion and semi-bionic extraction were used to pretreat the samples of Compound Niuhuang Xiaoyan capsule, and the inductively coupled plasma mass spectrometry method was established to determine the contents of total arsenic,
total mercury, soluble arsenic and soluble mercury in Compound Niuhuang Xiaoyan capsule. The accuracy of the established method was further evaluated by using a certified standard reference material prepared from dried citrus leaves (GBW10020(GSB-11)). Results: The spiked recoveries were
within 95-105 %. The R.S.D% of repeatability (N=6) and precision (N = 6) were below 5.0 %. The correlation coefficients of linear (R) for arsenic and mercury were both above 0.998. The limits of quantification (LOQ) were below 0.1 μg/L. The contents of As and Hg were defined in the dried
citrus leaves and very near to the standard values provided by the manufacturer. The established method was applied for the analysis of three batches of Compound Niuhuang Xiaoyan capsule produced by three different manufacturers successfully. Insufficient realgar or cinnabar was formulated
in some Compound Niuhuang Xiaoyan capsule samples. Conclusion: The analysis showed that the contents of soluble arsenic and soluble mercury in artificial gastric juice were significantly less than that of total arsenic and total mercury in Compound Niuhuang Xiaoyan capsule. The results
provided a reference for further study on the toxicology and pharmacokinetics of Compound Niuhuang Xiaoyan capsule.
研究领域:
中药学
·
分析化学
·
毒理学
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DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 19
·3174
·
IF 4.7
Qiaozhu Wei,Jingtao Cui,Weimin Zhang,Lianzhou Jiang,Tian Li
Coconut chips are a popular leisure food, but the residual crumbly feeling after chewing affects the eating experience. To address this problem, we investigated the mechanism of degradation of insoluble dietary fiber (IDF) from coconut chips by ultra-high pressure (UHP). The optimal conditions for UHP treatment were 100 MPa and 40 min. After UHP treatment, the hardness decreased by 60%, and the content of soluble dietary fiber (SDF) increased by 55%. So far, the meaning of SDF has not been defined. The microstructure of IDF was damaged and the surface was rough. There was no obvious change in the chemical structure. The position of the characteristic diffraction peaks was basically unchanged, but the crystallinity dropped by almost three times. The thermal stability decreased, and the composition of the monosaccharides changed. Together, UHP treatment can improve the problem of the residual crumbly feeling after chewing coconut chips and improve the quality of the product.
研究领域:
食品科学
·
生物化学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Lingfang Zhang,Qianyi Jiang,Binghua Sun,Xiaoxi Wang,Sen Ma
This study investigated the effect of changing the ratio of soluble (SDF) and insoluble (IDF) wheat bran dietary fiber on matrix structure and protein digestion in wheat noodles. Results showed that SDF at a low ratio (≤ 3.5) induced a compact matrix structure, which decreased protein digestibility to 67.70 % and total amino acids release to 140.67 mg/g protein, respectively. The compaction of the noodle matrix could be attributed to the promotion of cross-linking between D-type low molecular weight gluten and γ-gliadin by a small amount of SDF, reducing lacunarity from 0.28 to 0.16. A high SDF ratio (>3.5) induced a more fragmented matrix structure, increasing protein digestibility to 76.88 %. Notably, at a higher SDF ratio (>4.5), the concentration-dependent static quenching on enzymatic sites of SDF became prominent, slightly reducing gastric protein digestibility. In summary, an SDF ratio of 2.0–2.5 helps to reduce the inhibition of SDF on protein digestion.
研究领域:
食品科学
·
营养学
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产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2024
·
IF 5.8
Rui Guo,Lidan Wang,Feifan Chen,Kaiwen Li,Yue Gao,Chenwei Shen,Xuan Ye,Senping Liu,Ya Wang,Zeshen Li,Peng Li,Zhen Xu,Yingjun Liu,Chao Gao
The integration of graphene and nonionic water-soluble polymers has generated useful composites with high performances and rich functionalities. These attractive graphene composites are usually synthesized from the aqueous mixture of graphene oxide (GO) precursor and polymers such as synthetic polyvinyl alcohol and natural cellulose. In this widely known preparation method, the miscibility of GO and nonionic water-soluble polymers seems to be intuitive but has been disputed by some observations of gelation and aggregation. Herein, we have re-examined the miscibility of GO and nonionic water-soluble polymers and confirm their general coaggregation caused by hydrogen bonding interaction. Due to the increasing GO concentration, the property of stable miscibility is converted to aggregation by surface adsorption with transient hydrogen bond crosslinking. We have proposed a preheat mixing strategy to prepare a homogenous solution of GO and nonionic water-soluble polymers in any arbitrary ratio. The re-exploited miscibility allows the fabrication of homogeneous composite papers with renewed high performance trend. The hydrogen bonding-regulated miscibility refreshes the understanding on graphene/water-soluble polymeric composites and provides an ecofriendly interaction control method to modulate the assembly of structures and materials.
研究领域:
材料科学
·
化学
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产品关联
DOI
PubMed
高影响因子
Food & Function
·
2021
·Vol. 12
·期 10
·4696-4706
·
IF 5.396
Qi Li,Xiangjun Fang,Hangjun Chen,Yanchao Han,Ruiling Liu,Weijie Wu,Haiyan Gao
The effects of the administration of bamboo shoot (Phyllostachys edulis) dietary fiber (BSDF) on high-fat diet (HDF) induced hyperlipidemia were studied with SD rat models. The results indicated that the body weight of rats and the mass of their adipose tissue were significantly (P < 0.05) decreased after the combination treatment of soluble dietary fiber (SDF) and insoluble dietary fiber (IDF). The levels of total cholesterol, triglyceride, and low-density lipoprotein cholesterol were significantly (P < 0.05) decreased by 30.20%, 53.28% and 35.63%, respectively, compared to those of the model group. The levels of serum alanine aminotransferase, aspartate aminotransferase, leptin, and insulin-like growth factor-1 of the SDF + IDF group were also significantly lower than those of the HDF model group (P < 0.05). Additionally, the perirenal fat percentage and body fat percentage in the SDF + IDF group were reduced by 31.61% and 25.09%, respectively. IDF exhibited better hypolipidemic ability than SDF in HFD induced rats at the same dose, while SDF and IDF showed a synergistic hyperlipidemia prevention effect. The mRNA expression levels of lipid synthesis genes SREBP-1c and FAS were significantly down-regulated by SDF + IDF treatment (P < 0.05). These results suggested that BSDF composed of IDF and SDF, with potential hypolipidemic effects, could be used in the production of health-beneficial food.
研究领域:
营养学
·
分子生物学
·
医学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）