ACS Food Science & Technology
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2023
·
IF 2.3
Hao-Xiang Gao,Nan Chen,Qiang He,Bi Shi,Zhi-Long Yu,Wei-Cai Zeng
This study aimed to construct zeolite/chitosan-based magnetic microparticles (MMPs) using ZSM-5 zeolite, Fe3O4, and chitosan with incorporated Ligustrum robustum (Rxob.) Blume polyphenol extract (LRE) for oil quality control. Magnetic characterization and X-ray diffraction analysis demonstrated that the obtained MMPs had a saturation magnetization of 12.07 emu/g and showed magnetic separation ability due to the presence of ferric oxide crystals. Meanwhile, MMPs exhibited good resistance against heating and had a uniform structure with an intermediate diameter of 125.79 μm. Furthermore, scanning electron microscopy and sustained-release analysis indicated that MMPs could well embed LRE and slowly release LRE in weakly polar solvents. Finally, the oil protection experiments demonstrated that MMPs could inhibit the quality deterioration of peanut oils during the frying process and show good recyclability. The findings provide promise for using magnetic microparticles in oil quality control during high-temperature processing in agriculture and food industries.
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Food and Bioprocess Technology
·
2023
·
IF 5.6
Liu Xinru,Ma Qianwei,Sun Yongjun,Ju Wenming,Kumrungsee Thanutchaporn,Zhou Zhongkai,Wang Lijuan,Cao Ruge
To take better advantage of buckwheat polyphenols, processings including extrusion, steam explosion, microwave, roasting, superheated steam, ultrasound and enzymolysis treatment were applied to buckwheat bran to release more bioactive polyphenols. Polyphenols were extracted and characterized, and rutin was identified as the predominant compound. To further improve the properties of buckwheat polyphenols, rutin was selected as the target polyphenol and a formation of its ionic cross-linking complex was proposed. Rutin was loaded on chitooligosaccharide as Rutin-COS with tripolyphosphate (TPP) as crosslinking agent, whose molecular structure and properties were investigated. Results showed that all processing significantly increased ( p < 0.05) the content of buckwheat polyphenols, up to 1.83-fold increase. The composition of polyphenols was altered, and their antioxidant (up to 15% increase) and antibacterial activities were significantly enhanced ( p < 0.05). Among all the processings, extrusion and superheated steam showed the best effect. For Rutin-COS complex, the encapsulation efficiency was as high as 74.77% with the mass ratio of rutin and COS at 1:8. The structure of Rutin-COS was stabilized by hydrogen bonding between aromatic rings of rutin and amino and hydroxy groups of COS in the network formed by COS and TPP. Compared to free rutin, Rutin-COS presented better thermal stability and water solubility. The antioxidant and antibacterial activities of Rutin-COS were also significantly improved ( p < 0.05) due to the molecular interaction between rutin and COS. The combination of processing and complexation strategy for buckwheat polyphenols in this work provided new approaches to take better advantages of polyphenols of cereal foods. Graphical Abstract
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Foods
·
2023
·Vol. 12
·期 18
·3495
·
IF 5.2
Zhiyu Sun,Yongbin Zhou,Wenxu Zhu,You Yin
As a traditional cash crop with ecological and nutritional values, mulberry is gradually expanding its consumption worldwide due to its great regional adaptability and superior health functions. The widespread interest in nutrients has led to a growing need to explore in depth the health benefits of mulberries. Many studies are actively being conducted to investigate the adaptability of the diversity of mulberries in different applications. This study systematically investigated the physicochemical properties and antioxidant activity of four mulberry genotypes cultivated in China’s semi-arid sandy regions to better understand the composition and health-promoting potential of this super crop. Chemical composition identification was identified via HPLC and antioxidant activity was further determined via DPPH and FRAP. The moisture, crude protein, ash, soluble solids, phenolics, anthocyanins, and flavonoids contents of mulberry were comparatively analyzed. The study revealed that the four mulberry genotypes showed significant differences in quality and content of the analyzed characteristics. The greatest antioxidant activity was found in Shensang 1, which had the most soluble solids (17%) and the highest amounts of free sugar (fructose: 5.14% and glucose: 5.46%). Ji’an had the most minerals (K: 2.35 mg/g, Ca: 2.27 mg/g, and Fe: 467.32 mg/kg) and it also contained chlorogenic acid, which has the potential to be turned into a natural hypoglycemic agent. PCA and Pearson correlation analysis indicated that the antioxidant activity was closely related to the chemical contents of total phenols, flavonoids, anthocyanins, and soluble sugars. If the antioxidant activity and nutrient content of the developed plants are considered, Shen Sang 1 is the most favorable variety. This finding can be used to support the widespread cultivation of mulberries to prevent desertification as well as to promote the development of the mulberry industry.Keywords:mulberries fruit characteristics;total phenolics;antioxidant activity
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Xiaoai Chen,Chunhe Gu,Kexue Zhu,Fei Xu,Zhen Feng,Yanjun Zhang
Different ripeness plays a key role in the final quality and flavor of Noni products, but the variations of quality and flavor during Noni ripening are still unclear. In this study, physicochemical analysis combined with electronic nose, electronic tongue and gas chromatography-mass spectrometry (GC–MS) were used to investigate the effect of different ripeness levels on Noni fruit quality and flavor chemistry. The results showed that the optimum stage of nutrient accumulation is 7–8 ripe (7M−8M), in which especially the higher contents were 144Mg/100 g vitamin C, 11.08 g/kg polyphenols, 15.32 g/kg flavonoids and 2420Mg/kg potassium. Octanoic acid and hexanoic acid with an unfriendly odor began to decrease significantly after 8 ripe (8M), the lowest contents were 256.76 and 231.26 ng/g at 9 ripe (9M). Sour, astringent and fresh tastes are the dominant tastes of Noni fruit. Therefore, the optimum harvesting time of Noni fruit is 8M.
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Horticulturae
·
2023
·Vol. 9
·期 9
·1019
·
IF 3.1
Yuan Zhang,Mina Nan,Huali Xue
Radix Astragali(RA) is the root ofAstragalus membranaceusvar. mongholicus (Bunge) P.K. Hsiao. In order to determine targeted and effective methods for treating mold infections in fresh RA, pathogenic fungi were isolated and identified using morphology and molecular biology techniques, and factors affecting the growth of the pathogenic fungi, such as temperature, pH, light, and carbon and nitrogen sources, were analyzed. Changes in the main active ingredients of RA, such as carbohydrates, flavonoids, and saponins, were detected before and after infection with pathogenic fungi. The results showed thatPenicillium polonicum,Trichothecium roseum, andFusarium equisetiwere the main pathogens causing postharvest disease in fresh RA. The optimum growth temperature for the three pathogens was 25 °C;P. polonicumwas able to grow at an alkaline pH of 8–9, whileT. roseumandF. equisetigrew better and had higher levels of sporulation under acidic conditions with pH values of 5–6. Different carbon and nitrogen sources had different effects on mycelium growth and sporulation. Darkness was favorable for the growth and sporulation of the three pathogens. Compared with healthy RA, the total carbohydrate, flavonoid, and saponin contents of the RA samples infected with the three fungi decreased. This study provides a theoretical basis for the scientific and precise control of RA postharvest disease during storage by targeting different pathogens and their growth conditions.Keywords:Radix Astragali;postharvest disease;identification;biological characteristics;active ingredients
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2023
·
IF 6
Yongyi Yang,Juan Peng,Qingqing Li,Qinfei Song,Quentin Cronk,Biao Xiong
Dark hawk tea, produced through pile-fermentation of Lauraceae family leaves, which is rich in various beneficial ingredients and health functions, relies heavily on microbial activity for its unique characteristics. However, the processing technology of dark hawk tea and the microorganisms' dynamic changes during its pile-fermentation remain largely unknown. In this study, based on the previous work, we optimized pile-fermentation parameters for analyzing changes in dark hawk tea's chemical components, volatile substances, and microbial diversity. The tea exhibited superior sensory scores and biochemical qualities under optimal conditions (35 °C, 62% water, 24 h), measuring 5.7 mg/g amino acid content. Gas chromatography-mass spectrometry (GC-MS) identified 108 volatile compounds, notably terpenes, ketones, and esters. Microbial analysis revealed Bacteroides and Faecalibacterium as dominant bacteria and Cladosporium and Mortierella as dominant fungi. Cladosporium prevailed in early fermentation, shifting to Mortierella later. Predicted metabolic pathways highlighted microbial functional genes predominantly participated in carbohydrate, amino acid, and energy metabolism during the pile-fermentation. These results hold important implications for expanding the variety of hawk tea products and deepening our understanding of microbial community dynamics through the pile-fermentation of dark hawk tea.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Xiao-Qiang Chen,Zi-Han Li,Ling-Ling Liu,Huan Wang,Shi-Han Yang,Jin-Shan Zhang,Ying Zhang
Natural deep eutectic solvents (DESs) were investigated as potential green extraction solvents in the ultrasound-assisted extraction (UAE) of flavonoids from Rubia truppeliana and R. cordifolia fruit. Lactic acid was selected as the optimal hydrogen bond donor for five solvents in the screening of DESs. To optimize the extraction of Rubia fruit flavonoids using DES and UAE, a Box–Behnken experimental design was developed. The optimal conditions were: liquid–solid ratio, 30; extraction temperature, 70 °C; and extraction time, 40 min. The corresponding yields were 49.41 mg/g for total flavonoids from Rubia truppeliana (TFT) and 55.15 mg/g for that of Rubia cordifolia (TFC). The extracts obtained under the optimum extraction conditions showed excellent antioxidant activities in DPPH, ABTS, and FRAP assays . The results demonstrated that the extraction using DES and UAE is an eco-friendly method for the extraction of flavonoids from Rubia fruit.
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Food Science & Nutrition
·
2021
·Vol. 9
·期 4
·2191-2202
·
IF 2.863
Zefeng Chen,Shupeng Cheng,Huiqiong Lin,Wenjing Wu,Liyi Liang,Xicai Chen,Xi Zheng,Yan He,Kun Zhang
Acanthopanax trifoliatus (L.) Merr (AT) is a medicinal and edible plant with high nutritional value. The biological activity of A. trifoliatus (L.) Merr and its basis for injury treatment are explored in this paper. AT was ethanol-extracted then refined separately with petroleum ether, chloroform, ethyl acetate, and n-butanol. Active ingredients were analyzed, and anti-bacterial, anti-inflammatory, analgesic, and hemostatic effects were explored. Petroleum ether layer (PEL) extract produced the strongest antibacterial effect. Ethyl acetate layer (EAL) extract had the highest active substance content, with strong hemostatic and analgesic activities. Chloroform layer (CL) extract had the strongest anti-inflammatory effect and significantly reduced IL-1β protein expression. Active ingredients were analyzed using HPLC and UPLC-MS to determine saponin, polyphenol, flavonoid, and characteristic ingredient contents. EAL extract had the highest polyphenol and flavonoid levels, including rutin, chlorogenic acid, isochlorogenic acid A, and isochlorogenic acid C, which may contribute to its nutritional activities. The study provides a reliable theoretical and practical basis for the applications of AT nutraceutical products.
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Food Bioscience
·
2021
·
IF 4.24
Chuan Qin,Yueqin Li,Yunzhen Zhang,Lianliang Liu,Zufang Wu,Peifang Weng
In this study, the inhibitory effects of oat polyphenols constituent on advanced glycation end products (AGEs) formation in the bovine serum albumin (BSA)-glucose and BSA-fructose models were explored. Spectroscopic techniques , SDS-PAGE and molecular docking were used to characterize the antiglycation capacity of oat polyphenols constituent. The results unveiled that apigenin and luteolin had the strongest inhibitory effect on AGEs. Spectroscopy results indicated that apigenin and luteolin inhibited the BSA glycation in a dose-dependent manner by attenuating the changes of conformational structure and microenvironment induced by glycation. Apigenin and luteolin also suppressed the cross-linking or aggregation of glycated BSA, which was reflected in the changed molecular weight and determined by SDS-PAGE. The prediction of molecular docking demonstrated that binding affinity of BSA-luteolin was greater than that of apigenin, which might be due to the additional hydroxyl group in the position of A ring of luteolin. In conclusion, luteolin had a stronger AGEs inhibitory activity than apigenin ( P < 0.05). Oat polyphenols may be a good food source for inhibiting the formation of AGEs in vitro .
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Chunhui Xu,Lu Liang,Tianming Yang,Lei Feng,Xuejin Mao,Yuanxing Wang
The chemical quality and biochemical properties of green tea processed from different tea shoot maturity has largely remained unexplored thus far. Total phenolic content, and total flavonoid content decreased during tea shoot maturation. Three in-vitro bioactivities, namely α-glucosidase and pancreatic lipase inhibitory and antioxidant activity showed a similar changing trend. A significant correlation between TPC and TFC, and these bioactivities was found. Non-targeted metabolomic analysis revealed that green tea processed from different tea shoot maturity had obvious differences. Variable importance analysis and S-plot gave 32 characteristic metabolites responsible for the discrimination of different green teas. Orthogonal partial least square analysis was used calculate the correlation coefficient between each characteristic metabolite and the values of three in-vitro bioactivities. Several important differential bioactive metabolites were obtained using the above analysis. This study explored the metabolic change in green tea during the process of tea shoot ripening, thus providing unique tea quality information for green tea production.
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MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Xinyu Lu,Yingying Li,Xuemin Duan,Yifu Zhu,Ting Xue,Liangmei Rao,Yangping Wen,Qingyun Tian,Yue Cai,Quan Xu,Jingkun Xu
A novel nanozyme sensor based on the electro-synthesized molecularly imprinted conducting poly(3,4-ethylenedioxythiophene) (PEDOT) nanocomposite with graphene-like two-dimensional layered molybdenum disulfide (MoS 2 ) was successfully prepared for electrochemical detection and analysis of luteolin in Gnaphalium affine. MoS 2 -MIPs were prepared facilely by electrochemical polymerization of monomer 3,4-ethylenedioxythiophene in the presence of both modifier MoS 2 and template molecule luteolin that can change the morphological structure and specific surface area of PEDOT, enhance electronic conductivity of MoS 2 , and improve the recognition capability and electrocatalytic capacity of electrode interface. The morphological structure of MoS 2 -MIPs was characterized by SEM, and its electrochemical performance and sensing parameters were investigated by voltammetry. The electrochemical response of luteolin was recorded by MoS 2 -MIPs in the linear concentration range from 3 × 10 -7 to 3 × 10 -5 Μ with limit of detection of 0.04 μΜ under the optimal conditions, which was successfully employed for electrochemically detecting luteolin in Gnaphalium affine with acceptable recoveries in comparison with high-performance liquid chromatography. This will provide a new nanozyme sensing platform comprised of electro-synthesized molecularly imprinted conducting polymers and graphene-like two-dimensional layered nanomaterials.
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JOURNAL OF FOOD BIOCHEMISTRY
·
2021
·Vol. 45
·期 5
·e13737
·
IF 2.72
Ming-Xi Zhou,Xing Tian,Zhong-Qin Wu,Ke Li,Zong-Jun Li
Areca nut and Fuzhuan brick tea, a type of natural plant products, have obvious effects of fat reduction and weight loss; however, there is no report on their synergistic effect. This study investigated the effects of Fuzhuan brick tea supplemented with different concentrations of areca nut (5% (LAF), 10% (MAF), and 20% (HAF)) on serum and gut microbiota in Kunming (KM) mice. The results showed that Fuzhuan brick tea supplemented with areca nuts (AFTs) could reduce weight, prevent the accumulation of fat, inhibit the increase in the levels of serum triglyceride, total cholesterol, low-density lipoprotein cholesterol, blood glucose, free fatty acid, insulin, and total bile acid, alleviate the decrease in high-density lipoprotein cholesterol level, and regulate the composition of gut microbiota by high-fat diet intervention. The HAF group with 20% areca nut content showed the best effect. These results could provide a novel approach to prevent obesity and hyperlipidemia. Practical applications Consumption of areca nut and tea is widespread in Asia and other regions. As a controversial raw material, the damage due to areca nut to oral mucosa health has often aroused public concern and heated discussion; however, its medicinal value has been confirmed in terms of its pharmacological effects in various aspects. Fuzhuan brick tea, a type of traditional postfermented dark tea, has been confirmed to exert effects of antiobesity. Therefore, the areca nut and Fuzhuan brick tea, as a type of natural plant products, have obvious effects of fat reduction and weight loss; however, their synergistic effect has not been reported. To our knowledge, this study is the first to explore the effects of the Fuzhuan brick tea supplemented with areca nuts (AFTs) on serum and gut microbiota in mice. On the premise of exerting their beneficial effects (especially in terms of easing food stagnation and eliminating indigestion) and reducing their toxic and side effects, the effects of AFTs on health were further clarified, which could provide a novel direction for the development and utilization of areca nut. Moreover, our research would increase public understanding of areca nut and provide guidance to the Fuzhuan brick tea processing industry.
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