FOOD SCIENCE AND TECHNOLOGY RESEARCH
·
2021
·
IF 0.668
Shirong Huang,Huan Liu,Sinian Yan,Dongfang Chen,Xin Mei
Here, the changes in phenolic composition and antioxidant activities (ABTS, DPPH, and FRAP) of raw and pickled cowpea green pod during in vitro simulated gastrointestinal digestion (GID) were investigated. The inhibitory activities of the undigested and digested samples towards α-amylase, α-glucosidase and lipase were determined. Results revealed that total phenolic (TP) and flavonoid (TF) contents of both raw and pickled samples were increased after gastric and intestinal digestion, and the pickled sample had lower TP and TF content after each digestion phase. A similar trend was observed for antioxidant activities, which were significantly correlated with TP and TF contents (p < 0.05). Seven phenolic compounds were identified and quantified by HPLC-DAD. Their contents were affected by digestion and pickling, and raw cowpea pod had higher contents before and after GID. Inhibitory effects towards α-amylase, α-glucosidase and lipase were increased for raw cowpea pod after GID. Pickled cowpea pod also showed an increased inhibitory activity towards lipase, while no activity towards α-amylase and α-glucosidase. Raw cowpea pod had higher inhibitory effects towards α-amylase, α-glucosidase and lipase than the pickled one at each digestion phase. Our results showed that pickling process reduced the health-promoting properties of cowpea green pod.
研究领域:
食品科学
·
营养学
·
生物化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
·
IF 11.4
Qing Zhang,Yingying Yang,Nanxiu Shang,Yu Xiao,Yilin Xiao,Yanna Liu,Xiaoman Jiang,Edmond Sanganyado,Shaoda Liu,Xinghui Xia
There is growing evidence that the transformation products of emerging contaminants in foodstuffs may pose a health risk to humans. However, the exact identities, levels, and estimated dietary intake (EDI) of neonicotinoid transformation products in crops remain poorly understood. We established an extended suspect screening strategy to investigate neonicotinoid insecticides and their transformation products in retail cowpea from 11 cities in Hainan Province, China. Forty-nine transformation products were identified in retail cowpea, of which 22–36 were found in 98.6% of the samples. Notably, 31 new transformation products were derived from new processes or a combination of different transformation processes. The mean concentrations of neonicotinoids and nine of the transformation products (with authentic standards) were in the ranges of 0.0824–5.34 and 0.0636–1.50 ng/g, respectively. The cumulative EDIs of the quantified transformation products were lower than those of parent neonicotinoids with the exception of clothianidin desmethyl, which had a ratio of 1157%. However, the coexistence of the other 40 transformation products (without authentic standards) in cowpea suggested that the exposure risk from all of the transformation products might be higher. This study demonstrated that pesticide transformation products should be considered in food chain risk assessments and included in future regulatory management.
研究领域:
食品安全
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环境科学
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毒理学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Samuel Ariyo Okaiyeto,Shi-Han Yu,Haiou Wang,Jin-Hong Zhao,Cun-Shan Zhou,Ahmed Jamilu Mustapha,An-An Zhang,Fan Yang,Jing-Shou Zhang,Hong-Wei Xiao
This study evaluates vacuum-steam pulsed blanching (VSPB) as a pretreatment for Vigna unguiculata pods, focusing on drying kinetics, nutritional quality, and anti-nutritional factors. Pods underwent 0–4 VSPB cycles, followed by hot air drying at 50, 60, and 70 °C. VSPB reduced peroxidase activity to 4.8 %, enhancing enzyme inactivation. Texture analysis revealed an 85.6 % reduction in hardness, while the Midilli model provided the best description of drying kinetics (R 2 ≥ 0.9979). Specific energy consumption decreased by up to 40 % at 70 °C for blanched samples. VSPB preserved ascorbic acid, vitamin A, and chlorophyll, reduced lignin by 29.63 %, and lowered lectins from 71.01 to 8.88 Hu/mg. Folate retention declined with increased cycles. SEM and TEM analyses revealed microstructural and ultrastructural disruptions enhancing moisture diffusivity. VSPB proves effective in reducing anti-nutritional factors and retaining nutrients, offering a promising pretreatment for Vigna unguiculata with potential industrial applications.
研究领域:
食品科学与技术
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采后加工
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植物食品生物化学
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干燥技术
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营养品质
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产品关联
DOI
PubMed
高影响因子
ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
·
2014
·Vol. 152
·期 3
·248-257
·
IF 1.711
Pan Wang,Na Zhang,Li-Lin Zhou,Sheng-Yun Si,Chao-Liang Lei,Hui Ai,Xiao-Ping Wang
In many herbivorous insects, the attraction to suitable host plants is in part mediated by similar olfactory cues from different host plants. This study investigated the electrophysiological and behavioral responses of female Maruca vitrata Fabricius (Lepidoptera: Crambidae) to floral volatiles from two host plants, Vigna unguiculata (L.) Walpers and Lablab purpureus (L.) Sweet (both Fabaceae). Qualitative and quantitative differences were found between the odor profiles of two host plants by gas chromatography-mass spectrometry (GC-MS). Nine electroantennography-active compounds were detected in the headspace collections of the two host plants by means of coupled GC-electroantennographic detection. In a wind tunnel, female behaviors (upwind flight and source approach) were not affected by stimuli or their interaction with host plants, but the behaviors were influenced by host plants. A mixture of the nine bioactive compounds, including limonene, 1,3-diethylbenzene, benzaldehyde, acetophenone, 4-ethylbenzaldehyde, 1-(4-ethylphenyl)-ethanone, 2-methyl-3-phenylpropanal, 1H-indol-4-ol, and 1,1′-(1,4-phenylene)bis-ethanone mimicking L. purpureus (in a ratio of 0.4:9.7:2.4:5.7:78.1:4.8:100:0.6:30.3) attracted significantly more females approaching the sources compared with the mixture of compounds mimicking V. unguiculata (in a ratio of 0.3:1.4:1.6:3.7:50.8:3.2:100:4.2:16.7). Further bioassays revealed that a subtractive 4-component blend [limonene, 1,3-diethylbenzene, 4-ethylbenzaldehyde, and 1-(4-ethylphenyl)-ethanone in a ratio of 0.4:9.7:78.1:4.8] was essential for maximal attraction. Our study suggested that female M. vitrata might use similar odors from V. unguiculata and L. purpureus to locate suitable hosts and that an artificial lure, containing the major floral volatiles released by the two host plants, might be useful in exploring efficiency monitoring and/or control strategies of this moth in the field.
研究领域:
昆虫学
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化学生态学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Wenjie Deng,Yanheng Zhang,Liangheng He,Li Xu,Xulang Ye,Hanhong Xu,Li Zhu,Jinliang Jia
Thrips [ Megalurothrips usitatus (Bagnall)] (Thysanoptera: Thripidae) is a pest that poses a serious challenge to global crop production and food supply, especially to the cowpea industry. Nano-delivery systems have broad application prospects in the prevention and control of pests in agriculture. Herein, three types of amino acid (AA) modified polysuccinimide nano-delivery carriers (PSI-GABA, PSI-ASP and PSI-GLU) were constructed with a diameter of approximately 150 nm to load thiamethoxam (THX), which enhanced THX effective distribution and use with cowpea plants. Significantly, the PSI-GLU nanocarrier effectively delivered THX to cowpea plant tissues following 6 h of soil application. Compared with commercial THX suspension (SC), the THX content in the leaves of cowpea plants was increased by 2.3 times. Confocal laser scanning microscopy revealed that the FITC-labeled PSI-GLU nanocarrier reached the leaves through the vascular system after being absorbed by the roots of cowpea plants. The PSI-GLU nanocarrier decreased the LC 50 of THX from 11.45 to 7.79 mg/L and significantly enhanced the insecticidal effect. The PSI-GLU nanocarrier also improved the safety of THX to worker bees at 48 h, and moreover showed a growth-promoting effect on cowpea seedlings. These results demonstrated that the PSI-GLU nano-delivery carrier has promising uses on improving the effective utilization of THX for the sustainable control of thrips and reducing the risk to non-target pollutions.
研究领域:
农业科学
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昆虫学
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植物保护
✓ 已验证
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）