LWT-FOOD SCIENCE AND TECHNOLOGY
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2023
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IF 6
Yurou Yun,Jian Li,Fei Pan,Yijun Zhou,Xiangqiao Feng,Jun Tian,Shengbao Cai,Junjie Yi,Linyan Zhou
Low-sugar jams (LSJ) are promoted as a healthier food option due to the healthy trend, and significant color changes negatively affects the evaluation of these products. To reveal protective effect of low methoxyl & amidated pectin (LMA) on anthocyanin in jam treated by high-pressure processing (HPP), this study compared the changes in microbes and quality attributes of LSJ prepared with LMA and high-sugar pomegranate jam (HSJ) prepared with high methoxyl pectin (HMP) after HPP at 600 MPa for 5 min during accelerated storage at 35 °C for 30 days, and molecular dynamics simulation was conducted to reveal the interaction between LMA and anthocyanin. LSJ-HPP had better color quality with higher values of L* , a* , and total anthocyanin content (TAC), the corresponding percent polymeric color and browning index were 41% and 16% lower than those of HSJ-HPP, respectively. TAC in LSJ-HPP, HSJ, and HSJ-HPP decreased to 9.5, 8.6, and 6.0 mg/kg (pomegranate puree) after storage, respectively. Cyanidin-3- O -glucoside formed more H-bonds with LMA than HMP, while their total interaction energy and the binding frequency and number were also higher. This study provided a foundation for the processing and storage of high quality LSJ, and also broadened the application field of HPP technology.
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JOURNAL OF LUMINESCENCE
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2023
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IF 3.6
Zhifeng Cai,Yi Zhang,Yiming Zhang,Yongjie Bai,Jiayue Huang,Zijing Guo,Huangjing Bao,Jiayi Zhang
Chrysin has carried out intensive interest in medicine areas due to its excellent influences for human health. Precise determination of chrysin is fairly necessary for pharmaceutical quality control and clinical study. Herein, water soluble fluorescent copper nanoclusters (Cu NCs) were developed through one-pot itinerary by utilizing polyvinylpyrrolidone as the stabilizer and ascorbic acid as the reducing agent. The as-obtained Cu NCs emitted bright blue fluorescence and suggested good optical features and outstanding photostability with the quantum yield of 9.27%. The inner filter effect (IFE) should be the main cause of the fluorescence quenching of Cu NCs. For this, a fluorescent system for chrysin determination was carried out by utilizing the Cu NCs as a nanoprobe. The fluorescence weakening efficiency of Cu NCs had a linear relationship to chrysin amounts in the range of 0.5–300 μM, and detection limit of 0.093 μM was obtained. This as-established system was effectively utilized to measure chrysin in real samples.
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INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
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2023
·Vol. 58
·期 6
·3458-3468
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IF 3.3
Mingyan Liu,Xingzi Yao,Gaowei Zhang,Shengxiang Yi,Xueyong Huang,Fangjian Ning,Liping Luo
Summary Eurya honey (EH) is produced from the nectar of Eurya. In this paper, the physicochemical properties (moisture, free acidity, pH, 5-hydroxymethylfurfural, conductivity, sugar, and colour) of EH were systematically studied for the first time. The total phenols and flavonoids were determined by spectrophotometry, and the contents were 40.29 ± 4.17 mg GAE/100 g and 12.44 ± 0.62 mg RE/100 g, respectively. A total of 232 compounds were identified, and 30 of them were quantified by ultra-performance liquid chromatography coupled with quadrupole/time-of-flight mass spectrometry (UPLC-Q/TOF-MS). The potential markers of EH were abscisic acid (21.3–103.4 μg/100 g), gallic acid (6.9–220.2 μg/100 g), tricoumaroyl spermidine (284.2–518.1 μg/100 g), and kaempferol (15.0–258.7 μg/100 g). EH showed antioxidant capacities in DPPH free radical-scavenging activity (IC 50 : 42.87–131.26 mg mL −1 ), ferric reducing antioxidant capacity (23.22–112.24 μmol FeSO 4 ·7H 2 O/100 g), and ABTS radical-scavenging activity assays (9.51–31.21 μmol Trolox/100 g).
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iScience
·
2023
·
IF 5.8
Meng Xiao,Ningxia Xu,Aitong He,Zipei Yu,Bo Chen,Baohui Jin,Lelun Jiang,Changqing Yi
Summary Cost-effective and user-friendly quantitation at points-of-need plays an important role in food safety inspection, environmental monitoring, and biomedical analysis. This study reports a stand-alone smartphone-based fluorospectrophotometer (the SBS) installed with a custom-designed application (the SBS-App) for on-site quantitation of pesticide using a ratiometric sensing scheme. The SBS can collect fluorescence emission spectra in the wavelength range of 380-760 nm within 5 s. A ratiometric fluorescence probe is facilely prepared by directly mixing the blue-emissive carbon nanodots (the Fe 3+ -specific fluorometric indicator) and red-emissive quantum dots (the internal standard) at a ratio of 11.6 (w/w). Based on the acetylcholinesterase/choline oxidase dual enzyme-mediated cascade catalytic reactions of Fe 2+ /Fe 3+ transformation, a ratiometric fluorescence sensing scheme is developed. The practicability of the SBS is validated by on-site quantitation of chlorpyrifos in apple and cabbage with a comparable accuracy to the GC-MS method, offering a scalable solution to establish a cost-effective surveillance system for pesticide pollution.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Zhenzhen Guo,Jinwen Zhu,Jian Yin,Peng Miao
In this study, a novel fluorescent biosensor is developed for the detection of H 2 O 2 and glucose based on Zeolitic Imidazolate Framework-8 (ZIF-8) nanocomposites. ZIF-8 encapsulating carbon nanodot (CD) exhibits bright fluorescence emission. After further loading of AgNP, the fluorescence is quenched, which is mainly based on the excited electron transfer from CD to AgNP. Besides, the excitation wavelength of CD falls within the adsorption range of AgNP, which leads to efficient inhibition of the excitation energy. The as-prepared AgNP-CD-ZIF-8 nanocomposites can be utilized as a highly sensitive platform for the analysis of H 2 O 2 and glucose. In the presence of glucose, H 2 O 2 can be generated by the catalysis of glucose oxidase (GOD), which induces the etching of AgNP and subsequent recovery of CD-ZIF-8 fluorescence. This “turn on” biosensor can be applied for facile and convenient quantification of H 2 O 2 . It can also be further extended to detect glucose in real samples after combining specific catalytic effect of GOD. The analytical performances are excellent, which demonstrates great potential for practical utility.
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PubMed
高影响因子
FUEL
·
2023
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IF 7.4
Qiang Lu,Yuefang Chen,Weipeng Song,Chaonan Tao,Junhua Zhang,Yong Sun,Lincai Peng,Huai Liu
Direct utilization of cellulosic material to produce specialty chemicals such as levulinate ester could greatly increase biorefinery profitability, but low-level efficiency due to its structural nature limits the strategy for industrial deployment. We report herein that adding γ-valerolactone (GVL) co-solvent during the acid-catalyzed conversion of cellulose in ethanol leads to a high reaction rate and improved catalytic activity towards ethyl levulinate (EL) production. With GVL as the co-solvent (the volume ratio of GVL to ethanol in 1:4), the yield of EL highly enhanced from 31% to 56% under mild operating conditions (170 °C for 2 h) over a low loading Al(OTf) 3 of 0.005 mol/L. The mechanistic role of GVL co-solvent to accelerate EL formation from cellulose has been fully elucidated via the combination of experimental and theoretical approaches. It demonstrates that GVL intervention not only favored the dissolution and depolymerization of cellulose, but also enabled the formation of Al species with higher acidity and catalytic activity by modulating the solvation environment, both of which are in charge of promoting cellulose conversion to EL. The activation energy barriers for cellulose depolymerization and glucoside alcoholysis have decreased by 30.8 kJ/mol and 24.8 kJ/mol, respectively. The understanding of this solvation effect can be employed to optimize the rate and yield for production of the versatile bio-based ester compound straight from cellulose valorization.
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Biomass Conversion and Biorefinery
·
2023
·
IF 4
Lu Yanyu,Lin Changqu,Yang Hao,Ma Peipei,Chen Jishuang,He Zhuang,Wu Hongli,Cao Fei,Chen Kequan,Ouyang Pingkai
Abstract FDCA (2,5-furandicarboxylic acid), produced by oxidizing carbohydrate-derived HMF (5-hydroxymethylfurfural), is a valuable monomer for biopolymers. The difference in the solvent system between the dehydration reaction and oxidation reactions seriously affects the process continuity and production efficiency. Herein, we reported a cascade process for FDCA production from carbohydrates in a single acetic acid system. The fructose conversion was complete and total furan compounds yield reached nearly 90%, which contained 42.8% HMF and 47.1% 5-acetoxymethylfurfural (AMF) in the acetic acid system with NaBr addition. After the azeotropic distillation and vacuum distillation in situ, AMF, a more stable intermediate than HMF, could be easily collected with 90.5% recovery and 99.9% purity. AMF was also oxidized into FDCA with 91.1% yield by Co/Mn/Br catalysts in the acetic acid system. Finally, the cascade process, including fructose dehydration–esterification and HMF/AMF mixture oxidation, was successfully realized in a single acetic acid system. This process is simple to operate, easy to implement, eliminates the use of extra acid or self-made catalysts and expensive solvents, and has the potential for continuous preparation from carbohydrates to FDCA. Graphical Abstract
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INDUSTRIAL CROPS AND PRODUCTS
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2023
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IF 5.9
Zengyong Li,Wu Lan,Chuanfu Liu
A biomass derived bifunctional catalyst (Ru/CCD-SO 3 H) was used for one-pot conversion of cassava dreg and cassava starch into sorbitol . The cassava dreg is mainly composed of residual cassava starch and holocellulose. The highest sorbitol yield of 11.43 % was achieved using cassava dreg as reactant. A synergistic catalytic effect of acid and metal sites of Ru/CCD-SO 3 H on cassava starch conversion to sorbitol was observed. The maximum sorbitol yield reached 82.51 % using cassava starch as reactant. A kinetic model of cassava starch degradation was performed. The reaction rate constants of cassava starch degradation, glucose conversion and sorbitol generation improved with enhancing temperature. The activation energy of cassava starch hydrolysis is larger than that of glucose hydrogenation, indicating the cassava starch hydrolysis is rate-determining step of cassava starch conversion into sorbitol. This work not only realizes the comprehensive utilization of cassava dreg, but also provides useful guidance for developing kinetic model of polysaccharide conversion.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2023
·
IF 6.1
Cong Zhang,Yingying Song,Ming Yuan,Liang Chen,Qianyu Zhang,Junjie Hu,Yan Meng,Shan Li,Guohua Zheng,Zhenpeng Qiu
Excessive fructose consumption exacerbates the progression of nonalcoholic fatty liver disease (NAFLD) by disrupting hepatic lipid homeostasis. This study sought to evaluate the efficacy of urolithin A (UroA) in a fructose-induced NAFLD mouse model. UroA was administered in the high-fructose-fed mice to investigate the antisteatotic effects in vivo. Fructose-stimulated HepG2 cells and primary hepatocytes were established for in vitro mechanistic assessment. The results suggested that UroA ameliorated fructose-induced hepatic steatosis in mice. Mechanistically, UroA impaired lipogenesis and enhanced β-oxidation in the livers of fructose-fed mice. Notably, UroA facilitated hepatic lipophagy through the AMPK/ULK1 pathway both in vivo and in vitro, degrading lipid droplets for fueling β-oxidation. This study indicates that UroA alleviates excessive lipid accumulation and restores lipid homeostasis in the livers of fructose-fed mice by suppressing lipid metabolic reprogramming and triggering lipophagy. Therefore, dietary supplementation of UroA or ellagitannins-rich foods may be beneficial for NAFLD individuals with high fructose intake.
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高影响因子
Foods
·
2023
·Vol. 12
·期 8
·1590
·
IF 5.2
Yaxian Chen,Yini Cai,Zhimin Zhao,Depo Yang,Xinjun Xu
In this study, the hot water extraction process of crude polysaccharides from Morindae officinalis radix (cMORP) was conducted and optimized through a single-factor test and orthogonal experimental design. With the optimal extraction process (extraction temperature of 80 °C, extraction time of 2 h, liquid/solid ratio of 15 mL/g, and number of extraction of 1), the cMORP was obtained by the ethanol precipitation method. The chemical properties and preliminary characterization of the cMORP were analyzed by chemical or instrumental methods. Furthermore, to indicate a preliminary study on safety, a single oral dose of 5000 mg/kg body weight (BW) was administered orally to Kunming (KM) mice for acute toxicity, and the cMORP was administered orally to KM mice once a day at doses of 25, 50, and 100 mg/kg BW for 30 days. General behaviors, body weight variations, histopathology, relative organ weights, and hematological and serum biochemical parameters were observed and recorded. The results suggested there were no toxicologically significant changes. Based on the safety study, cMORP can be initially considered non-toxic with no acute oral toxicity up to 5000 mg/kg BW and safe at up to 100 mg/kg BW in KM mice for 30 days.Keywords:Morindae officinalis radix;crude polysaccharides;hot water extraction;optimization;preliminary characterization;safety study
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Xingyilong Zhang,Houfang Lu,Man Zhang,Hui Han,Rubo Tian,Kejing Wu,Yingying Liu,Yingming Zhu,Bin Liang
Low-temperature production of 5-hydroxymethylfurfural (HMF) from fructose in ternary deep eutectic solvents (TerDESs) of choline chloride (ChCl), ethylene glycol (EG), and maleic acid (MalA) is proposed. A fructose conversion of 99.9% and an HMF yield of 87.3% are achieved in TerDES with ChCl/EG/MalA = 3:1:1 at 70 °C in 30 min. The ChCl can effectively activate the hydroxy groups of fructose by lengthening the C–O bonds. The EG can both improve the formation of ChCl–MalA DES with wide ranges of component ratios and reduce the viscosity of the DES. A reaction mechanism considering the synergistic effect of the components in TerDES is suggested to explain the enhanced dehydration of fructose under mild conditions. The recycling results of the TerDES show stable yields of HMF within five recycle runs. This work offers an efficient solution to a green and sustainable process for a high yield of HMF production.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Mengyao Liu,Taotao Gao,Hongmei Li,Bo Xie,Chunqiong Hu,Yong Guo,Dan Xiao
Based on the incidence of diabetes, developing glucose sensors of superior performance with low-cost transition metals (TMs) has been the direction of many researchers, amorphous TMs with highly efficient electrocatalytic properties have attracted our interest. On this basis, amorphous nickel–cobalt bimetallic N -doped carbon nanoparticles on carbon cloth (a-Ni 2 /Co 1 -NC/CC) were fabricated from ZIF-8, which was then used to fabricate an enzyme-free glucose sensor. It was found that the a-Ni 2 /Co 1 -NC/CC had the best response to glucose in 0.4 M NaOH at 0.55 V (vs Hg/HgO). As compared to crystal Ni 2 /Co 1 nanoparticle on carbon cloth (c-Ni 2 /Co 1 NPs/CC), cyclic voltammetry (CV) and chronoamperometry studies revealed that the a-Ni 2 /Co 1 -NC/CC showed a significant increase in the efficient of electrochemical oxidation of glucose under optimal conditions, exhibiting a high sensitivity of 2.455 mA mM −1 cm −2 with a low detection limit of 0.15 μM (S/N = 3). Furthermore, the constructed sensor based on a-Ni 2 /Co 1 -NC/CC also has long-term stability and can be used to detect glucose accurately in beverages (pure milk, coffee drinks, tea drinks, and soda water) with reasonable recovery from 95.6 % to 105.6 %. This study provides a simple and feasible method for the construction of a highly sensitive non-enzyme glucose electrochemical sensor based on amorphous TMs.
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