JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Jiali Yang,Xia Jiang,Rong Zhang,Qinxiang Luo,Bin Wang,Xuewei Shi,Zhangying Wang
The quality of table-stock sweetpotatoes is significantly influenced by carbohydrates. The study investigated the changes of dry matter, starch, amylose, soluble sugar and 22 sugars in six purple-fleshed sweetpotatoes (PFSPs) with different anthocyanin contents harvested at 75, 105, 135, 165 days after transplanting, and revealed the accumulation pattern of carbohydrates in PFSPs. The dry matter accumulated constantly. The starch content decreased at 165d in GZ1, GZ9, GZ10 and G95–1, while GZ2 and G20 continued to accumulate with more starchiness taste. The accumulation of soluble sugars was primarily observed in 75–135 days, with sucrose, glucose, and D-fructose representing the predominant sugars. The proportion of sucrose varying from 41.75 % to 87.07 %, but decreased at 165d accompanying with the increasing of glucose and fructose. GZ1 exhibited the most favorable taste profile with higher sweetness and GZ10 accumulated sugar rapidly at 165d, making it the most suitable for harvesting later. While GZ2, GZ9, G20 and G95–1 accumulated carbohydrates rapidly in 75–135 days, which can be harvested appropriately early. This study can provide a theoretical basis for the selection and breeding for better quality of PFSPs.
研究领域:
植物学
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食品科学
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DOI
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
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2017
·Vol. 42
·期 2
·e13484
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IF 0.791
Yi Ma,Chang-Jun Hou,Dan Li,Dan-Qun Huo
This study aimed to evaluate and understand the water–ethanol system effect on the stability of purple-fleshed sweet potato anthocyanins (PSPa). The stability of the PSPa in the model ethanol–water solutions (0–80%, vol/vol, pH 3.5) during storage (60 hr) at room temperature was monitored by UV-vis. The frontier molecular orbital theory was used to interpret the hydration reaction rate of the PSPa in both ethanol–water and aqueous solutions. In all of the model ethanol–water solutions, the degradation of the PSPa followed first-order kinetics during storage, and the degradation rates increased with increased ethanol concentration. Theory calculation results showed that an increase in ethanol concentration decreased the LUMO energy of anthocyanins, and accelerated nucleophilic attack from water, thus, resulting in lower stability. These findings could provide valuable evidence of the solvent effect on the stability of anthocyanins. Practical applications Fruit wines that contain anthocyanins are among the common alcoholic beverages. The stability of the anthocyanins is responsible for wine quality and may also affect the nutritional properties. Thus, investigating the effect of ethanol on the stability of anthocyanins is particularly valuable. The results of this research have important implications for the models developed so far to explain the degradation mechanism of anthocyanins in different media. In this context, examining the effect of different media on the degradation of anthocyanins would be useful to provide improved anthocyanin ability in the food and beverage industry.
研究领域:
食品科学
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分子生物学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
·
IF 5.162
Honglu Wang,Qinghua Yang,Uzizerimana Ferdinand,Xiangwei Gong,Yang Qu,Wenchuan Gao,Aliaksandr Ivanistau,Baili Feng,Minghui Liu
Sweet potato is attracting increased research attention because of its high nutritional value (e.g., carotene , anthocyanin , and minerals) and the wide application of its starch in foods and nonfoods. Herein, eight Chinese sweet potato varieties were investigated in terms of the physicochemical properties of starches. The lightness values of the eight sweet potato starches were higher than 90, which was satisfactory for starch purity. The average molecular weight (M W ) and amylopectin average chain length (ACL) of sweet potato starches ranged from 6.93 × 10 7 g/mol to 16.57 × 10 7 g/mol and from 21.85% to 23.00%, respectively. Su16 starch with low amylose content and a large amount of short chains exhibited low crystallinity and thermal properties. These results suggested that the molecular structure of amylose and amylopectin was the main influencing factor in determining sweet potato starch physicochemical properties. The swelling power and water solubility of the starches ranged within 20.14–30.51 g/g and 5.28%–11.71% at 95 °C, respectively. Regarding pasting properties, all the starch samples presented high peak viscosity (>5500 cP) and peak temperature (>78 °C), indicating that sweet potato starch can be used as a thickener. All eight sweet potatoes varieties showed great application potential in the food industry.
研究领域:
食品科学
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植物学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Suqi Liu,Linjiang Pang,Xiaowei Wu,Shihao Chen,Mingyi Yang,Jiyu Cheng,Guoquan Lu,Zhenhe Wang,Wei Chen,Yuge Guan,Xinghua Lu
Changes in the content of trans -caryophyllene could identify whether sweetpotatoes are infected with black spot disease. Therefore, in this study, a quartz crystal microbalance (QCM) sensor based on modified CAU-1@ZIF-8 was used for non-destructive detection of sweetpotato black spot. The experimental results showed that the constructed sensor performed best when both modified CAU-1 and ZIF-8 were present. The sensor showed a linear trend (R 2 = 0.996, limit of detection (LOD) = 0.55 ppm) in response to trans -caryophyllene in the concentration range of 20–340 ppm with a sensitivity of −0.489 Hz (ppm) −1 . The developed gas sensor was successfully used for the detection of trans -caryophyllene in real samples of sweetpotato. The experimental data showed a significant correlation with the results of gas chromatography-mass spectrometry (GC–MS) with a correlation coefficient of 0.970 ( p < 0.01). Therefore, it could be used for early warning of black spot disease in sweetpotato.
研究领域:
农业科学
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食品科学
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传感技术
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植物病理学
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产品关联
DOI
高影响因子
Food Bioscience
·
2021
·
IF 4.24
Liuying Zhu,Meiling Gao,Hongyan Li,Ze-yuan Deng,Bing Zhang,Yawei Fan
The influence of soluble dietary fiber (SDF) obtained from sweet potato dregs on the diversity and structure of gut microbiota in mice were explored. Thirty-two male Kunming (KM) mice were randomly divided into the following four treatment groups for a period of 30 days: control group (control diet, GC), SDF low dose (0.5 g/(kg.d), LSDF), middle dose (1.5 g/(kg.d), MSDF), and high dose (2.5 g/(kg.d), HSDF). High-throughput sequencing was used to profile the structure of g gut microbiota in the cecum samples. Different contents of SDF from sweet potato dregs showed different effects on the intestinal flora of mice, in terms of OUT , phylum, genus and species levels. MSDF group could reduce the relative abundance of Desulfovibrio , Corynebacterium_1, and Aerococcus (harmful bacteria, which could induce the inflammatory disorders); It could also increase the abundance of Lactobacillus and Faecalibaculum (beneficial bacteria, which maintain the intestinal flora balance and have anti-inflammatory effects). However, LSDF and HSDF groups showed the opposite trends to the MSDF group. It might be because that the intestinal environment formed by the intake of 1.5 g/(kg.d) of SDF from sweet potato dregs in mice was relatively suitable for the growth of beneficial bacteria (e.g. Lactobacillus spp. ), which is more conducive to the stability of intestinal flora. SDF from sweet potato dregs was effective on the intestinal flora of mice, and the MSDF group showed better effects than LSDF and HSDF.
研究领域:
营养学
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微生物学
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胃肠病学
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产品关联
DOI
高影响因子
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
·
2022
·Vol. 88
·期 6
·
IF 5.005
Yuan Gong,Jia-Qi Liu,Ming-Jie Xu,Chun-Mei Zhang,Jun Gao,Cheng-Guo Li,Ke Xing,Sheng Qin
Volatile organic compounds (VOCs) produced by microorganisms are considered promising environmental-safety fumigants for controlling postharvest diseases. Ceratocystis fimbriata, the pathogen of black spot disease, seriously affects the quality and yield of sweet potato in the field and postharvest. This study tested the effects of VOCs produced by Streptomyces setonii WY228 on the control of C. fimbriata in vitro and in vivo. The VOCs exhibited strong antifungal activity and significantly inhibited the growth of C. fimbriata. During the 20-day storage, VOC fumigation significantly controlled the occurrence of the pathogen, increased the content of antioxidants and defense-related enzymes and flavonoids, and boosted the starch content so as to maintain the quality of the sweet potatoes. Headspace analysis showed that the volatiles 2-ethyl-5-methylpyrazine and dimethyl disulfide significantly inhibited the mycelial growth and spore germination of C. fimbriata in a dose-dependent manner. Fumigation with 100 μL/L 2-ethyl-5-methylpyrazine completely controlled the pathogen in vivo after 10 days of storage. Transcriptome analysis showed that volatiles mainly downregulated the ribosomal synthesis genes and activated the proteasome system of the pathogen in response to VOC stress, while the genes related to spore development, cell membrane synthesis, mitochondrial function, and hydrolase and toxin synthesis were also downregulated, indicating that WY228-produced VOCs have diverse modes of action for pathogen control. Our study demonstrates that fumigation of sweet potato tuberous roots with S. setonii WY228 or use of formulations based on the VOCs is a promising new strategy to control sweet potato and other food and fruit pathogens during storage and shipment.IMPORTANCE Black spot disease caused by Ceratocystis fimbriata has caused huge economic losses to worldwide sweet potato production. At present, the control of C. fimbriata mainly depends on toxic fungicides, and there is a lack of effective alternative strategies. The research on biological control of sweet potato black spot disease is also very limited. An efficient biocontrol technique against pathogens using microbial volatile organic compounds could be an alternative method to control this disease. Our study revealed the significant biological control effect of volatile organic compounds of Streptomyces setonii WY228 on black spot disease of postharvest sweet potato and the complex antifungal mechanism against C. fimbriata. Our data demonstrated that Streptomyces setonii WY228 and its volatile 2-ethyl-5-methylpyrazine could be a candidate strain and compound for the creation of fumigants and showed the important potential of biotechnology applications in the field of food and agriculture.
研究领域:
微生物学
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植物病理学
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食品科学
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农业生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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