Foods
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2022
·Vol. 11
·期 5
·669
·
IF 5.561
Lei Han,Qiong Wu,Xiaomao Wu
Rosa roxburghiihas been widely planted in China. Powdery mildew is the most serious disease ofR. roxburghiicultivation. Pyraclostrobin was widely used as a novel fungicide to control powdery mildew ofR. roxburghii. To assess the safety of pyraclostrobin for use onR. roxburghiifruits, its residue rapid analysis as well as an investigation on its dissipation behaviors and terminal residues inR. roxburghiiand soil under field conditions were carried out. The QuEChERS method was simplified using LC–MS/MS detection and combined with liquid–liquid extraction purification to allow determination of pyraclostrobin levels inR. roxburghiifruits and the soil. The fortified recoveries at 0.1~5.0 mg/kg were 93.48~102.48%, with the relative standard deviation of 0.64~3.21%. The limit of detection of the analytical method was 0.16 and 0.15 µg/kg forR. roxburghiifruit and soil, respectively. The effects of different spray equipment and formulations on the persistence of pyraclostrobin inR.roxburghiiwere as follows: gaston gasoline piggyback agricultural sprayer (5.38 d) > manual agricultural backpack sprayer (3.37 d) > knapsack multi-function electric sprayer (2.91 d), suspension concentrate (SC) (6.78 d) > wettable powder (WP) (5.64 d) > water dispersible granule (WG) (4.69 d). The degradation of pyraclostrobin followed the first-order kinetics and its half-lives inR.roxburghiiand soil were 6.20~7.79 days and 3.86~5.95 days, respectively. The terminal residues of pyraclostrobin inR.roxburghiiand soil were 0.169~1.236 mg/kg and 0.105~3.153 mg/kg, respectively. This study provides data for the establishment of the maximum residue limit (MRL) as well as the safe and rational use of pyraclostrobin inR.roxburghiiproduction.Keywords:pyraclostrobin;Rosa roxburghii;soil;dissipation;residue
研究领域:
植物保护
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环境科学
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产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2020
·
IF 10.443
T. Zhang,H. Yu,J. Li,H. Song,S. Wang,Z. Zhang,S. Chen
Water pollution by pathogenic bacteria is a major threat to human health, and less-than-ideal disinfection and antimicrobial strategies have been developed to address waterborne pathogens. A green light–triggered photocatalytic antimicrobial rose bengal (RB)–modified cotton fabric (CF) (RB-CF) was prepared for wastewater disinfection by covalently binding RB to a CF surface. The antimicrobial rates of RB-CF against gram-positive Staphylococcus aureus and gram-negative Escherichia coli were both greater than 99.99% due to the generation of singlet oxygen that inactivates microbes under green light irradiation. Most importantly, RB-CF exhibited high stability, negligible cytotoxicity, and no release of free RB during the photocatalytic process, which was the key to its long-term antimicrobial activity and use security. Its long-term antimicrobial activity was further verified by the repeated photocatalytic disinfection; more than 99.99% of bacteria were inactivated even after five cycles. Therefore, this work may offer a potential avenue to develop low-cost, non-toxic, and durable antimicrobial fabrics with great potential for industrial and health-care applications, including but not limited to water purification , wastewater disinfection, masks, and protective clothing.
研究领域:
环境科学
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微生物学
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材料科学
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产品关联
DOI
高影响因子
Food Additives and Contaminants Part A-Chemistry Analysis Control Exposure & Risk Assessment
·
2024
·
IF 2.3
Lei Han,Zhaochun Jiang,Xuefei Zhang,Xiaomao Wu
Rosa roxburghii (R. roxburghii) is a unique, edible, medicinal fruit rich in vitamin C found in Southwest China. Triadimefon (TDF) is a triazole fungicide that is widely used to control powdery mildew in R. roxburghii. To assess the safety of TDF in R. roxburghii, an LC-MS/MS method was developed for the simultaneous quantification of TDF and its major metabolite, triadimenol (TDN) in R. roxburghii. Both TDF and TDN showed high correlation coefficients (>0.999) for the solvent- and matrix-matched calibrations. The recovery rates of TDF and TDN in R. roxburghii ranged from 90.18% to 100.42%, with a relative standard deviation (RSD) of 1.25%–9.22%. The limit of quantification (LOQ) was 0.01 mg·kg−1. The half-life of TDF in R. roxburghii was between 2.74 and 3.07 days, with terminal residues ranging from < LOQ to 1.84 mg·kg−1. Recommended maximum residue limits (MRLs) and safe pre-harvest intervals (PHIs) for TDF in R. roxburghii were 0.5 mg·kg−1 and 21 days, respectively. This study provides essential data for TDF’s safe and judicious use in R. roxburghii production.
研究领域:
植物保护
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分析化学
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食品安全
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DOI
PubMed
高影响因子
JOURNAL OF FOOD PROCESSING AND PRESERVATION
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2019
·Vol. 43
·期 8
·e14003
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IF 1.288
Zhong-Sheng Tang,Xin-An Zeng,Margaret A. Brennan,Zhong Han,Debao Niu,Yujia Huo
Characteristic aroma substances of cis-rose oxide imparts the odorant of “lychee-like,” while of citronellol is the precursor of it in lychee. The characterization of volatiles of lychee wine fermentation using headspace solid-phase microextraction gas chromatography-mass spectrometry combined with headspace gas chromatography-ion mobility spectrometry were done to regulate processing. Results indicated that the total of 97 volatiles (38 in common) were observed during fermentation, including 39 terpenoids, 5 alcohols, 22 esters, 4 acids, 7 alkenes, 4 ketones and ethers, 3 sulfur compounds and others. Losses of characteristic aromas mainly occurred during primary fermentation more than threefold decrease. The volatility of cis-rose oxide was stronger than citronellol, which implied that more gentle processing should be performed to protect lychee flavor. Cis-rose oxide was a mixture of monomer and dimer with unequal proportion, while citronellol was a monomer in lychee. The work provides important new information on aroma development during fermentation. Practical applications Fruit consumption, among which tropical fruit-based products have gained huge popularity in the recent years. The main high value-added processed products of lychee pulp are lychee wine and vinegar; however, the typical aroma always decreased or disappeared during fermentation. Therefore, this study aims at providing more information for product improvement and process development.
研究领域:
食品科学
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化学
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产品关联
DOI
高影响因子
MOLECULES
·
2016
·Vol. 21
·期 9
·1204
·
IF 2.465
Meng-Hua Liu,Qi Zhang,Yuan-He Zhang,Xian-Yuan Lu,Wei-Ming Fu,Jing-Yu He
BothRosa roxburghiiandR. sterilis, belonging to the Rosaceae, are endemic species in Guizhou Province, China. The fruits of these two species are mixed-used as functional food in the region. Aiming to elucidate the phytochemical characteristics ofR. roxburghiiandR. sterilisfruits, the essential oils and constituents in a methanol extract have been analyzed and compared by GC-MS and UFLC/Q-TOF-MS, respectively. As a result, a total of 135 volatile compounds were identified by GC-MS and 91 components were different betweenR. roxburghiiandR. sterilisfruits; a total of 59 compounds in methanol extracts were identified by UFLC/Q-TOF-MS, including 13 organic acids, 12 flavonoids, 11 triterpenes, nine amino acids, five phenylpropanoid derivatives, four condensed tannins, two stilbenes, two benzaldehyde derivatives and one benzoic acid derivative; and nine characteristic compounds were found betweenR. roxburghiiandR. sterilisfruits. This systematic study plays an important role forR. roxburghiiandR. sterilisfruits in the product development.Keywords:Rosa roxburghii;Rosa sterilis;constituents;GC-MS;UFLC/Q-TOF-MS
研究领域:
植物学
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食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 4
·1-19
·
IF 2.8
Yao Bingdong,Zheng Guangwei,Luan Yina,Wang Lingxu,Xing Xuemin,Wang Yangyang,Liu Yan,He Jingxian,Zhang Fengqing
The morphology-controlled synthesis of nanostructured photocatalysts by an environmentally friendly and low-cost method provides a feasible way to realize practical applications of photocatalysts. Herein, Bi 2 WO 6 (BWO) nanophotocatalysts with mulberry shape, sheet-like, and round-cake morphologies have been successfully synthesized through a highly facile solvothermal process by simply adjusting the solvothermal temperature or utilizing selective addition of ethylene glycol as an orientation agent without using strong acids and bases and/or hazardous chemicals. The ratio of ethylene glycol and glacial acetic acid can affect the morphology and oxygen vacancy content of BWO, thereby influencing the photocatalytic performance. The photocatalytic activity of the as-prepared samples was evaluated by degradation of rhodamine B (RhB) and tetracycline under visible-light irradiation. The results indicated that all the BWO samples exhibited morphology-associated photocatalytic activity, and the sheet-like structure of BWO obtained via solvothermal treatment at 120 °C with ethylene glycol and glacial acetic acid ratio of 1:3 achieved the maximum specific surface area and possessed abundant oxygen vacancies, exhibiting outstanding photocatalytic activity for degradation of RhB and tetracycline. The degradation rate of RhB reached 100% within 20 min. To the best of our knowledge, this value is one of the most remarkable values for pristine BWO photocatalysts. Radical capture experiments demonstrated that hydroxyl radicals (·OH) play major roles compared with electrons (e − ) and holes (h + ) in the photocatalytic degradation process. A possible mechanism for the photocatalytic degradation of pollutants was proposed to better understand the reaction process. We believe that the more economical, efficient and greener methodology can provide guidance to develop highly efficient photocatalysts with favourable morphology and structure.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
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2023
·Vol. 28
·期 21
·7307
·
IF 4.6
Yecheng Lei,Xiao Lei,Anqi Zhu,Shijie Xie,Tiantian Zhang,Chuo Wang,Anning Song,Xiaoming Wang,Guangwen Shu,Xukun Deng
Acetaminophen (APAP)-induced liver injury is a common hepatic disease resulting from drug abuse. Few targeted treatments are available clinically nowadays. The flower bud ofRosa rugosahas a wide range of biological activities. However, it is unclear whether it alleviates liver injury caused by APAP. Here, we prepared an ethanol extract ofRosa rugosa(ERS) and analyzed its chemical profile. Furthermore, we revealed that ERS significantly ameliorated APAP-induced apoptosis and ferroptosis in AML-12 hepatocytes and dampened APAP-mediated cytotoxicity. In AML-12 cells, ERS elevated Sirt1 expression, boosted the LKB1/AMPK/Nrf2 axis, and thereby crippled APAP-induced intracellular oxidative stress. Both EX527 and NAM, which are chemically unrelated inhibitors of Sirt1, blocked ERS-induced activation of LKB1/AMPK/Nrf2 signaling. The protection of ERS against APAP-triggered toxicity in AML-12 cells was subsequently abolished. As expression of LKB1 was knocked down, ERS still upregulated Sirt1 but failed to activate AMPK/Nrf2 cascade or suppress cytotoxicity provoked by APAP. Results of in vivo experiments showed that ERS attenuated APAP-caused hepatocyte apoptosis and ferroptosis and improved liver injury and inflammation. Consistently, ERS boosted Sirt1 expression, increased phosphorylations of LKB1 and AMPK, and promoted Nrf2 nuclear translocation in the livers of APAP-intoxicated mice. Hepatic transcriptions of HO-1 and GCLC, which are downstream antioxidant genes of Nrf2, were also significantly increased in response to ERS. Our results collectively indicated that ERS effectively attenuates APAP-induced liver injury by activating LKB1/AMPK/Nrf2 cascade. Upregulated expression of Sirt1 plays a crucial role in ERS-mediated activation of LKB1.Keywords:extract ofRosa rugosa;acetaminophen;liver injury;Sirt1;Nrf2
研究领域:
药理学
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肝脏病学
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植物化学
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2018
·
IF 4.946
Lei Wang,Bin Zhang,Jie Xiao,Qiang Huang,Chao Li,Xiong Fu
Water-soluble polysaccharides (RTFP) were extracted from Rosa roxburghii Tratt fruit by hot water method. The physicochemical, functional, and hypoglycemic properties of RTFP were investigated. The results revealed that RTFP mainly contained carbohydrates (63.79 ± 0.73%, g/g), uronic acids (14.8 ± 0.06%, g/g), and proteins (4.10 ± 0.58%, g/g). RTFP was composed of arabinose, galactose, glucose, mannose, xylose, and fucose with molar percentages of 33.8, 37.3, 20.7, 1.74, 3.43, and 2.95%, respectively. Functional analyses indicated that RTFP had good oil-holding capacity, foaming properties, and emulsifying capacity. The rheological results showed that RTFP exhibited typical shear-thinning behavior and viscoelastic properties influenced by sample concentration, temperature and inorganic salt. Additionally, RTFP exhibited favorable inhibitory activities against α-glucosidase in a mixed inhibition type, and against α-amylase in an uncompetitive inhibition type. These results suggest that RTFP can be exploited as a multi-functional additive or hypoglycemic agent in foods, pharmaceuticals and cosmetics.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
·
2019
·Vol. 56
·期 9
·4009-4015
·
IF 1.85
Qin Hao,Li Bao-cai,Dai Wei-feng,Xiang Cheng,Qin Yi,Jiao Shi-yun,Zhang Mi
Volatiles have been regarded as active substances in many foods, whose chemicals can be analyzed by GC–MS qualitatively and quantitatively. However, the activities of volatiles are often studied as a whole, and it has no an effective method to determine that which molecule is active in volatiles by far. In order to identify the antioxidant molecules in volatiles, a rapid determination method was developed by GC–FID/MS combined with DPPH radical reaction in this study. Three antioxidant molecules were identified and validated among 20 components in rose tea infusion. Their activity validation and the methodological evaluation indicated this method could be used for distinguishing antioxidant molecules in volatiles rapidly and effectively.
研究领域:
食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Horticulture Environment and Biotechnology
·
2018
·Vol. 59
·期 6
·835-845
·
IF 1.193
Gong Bi,Huang Shuai,Ye Niu,Yuan Xue,Ma Huiling
We studied the role of ethylene control in regulating energy metabolism, antioxidant enzyme activity, and vase life of cut rose Rosa hybrida ‘Carola’. Rose flowers at stage II were sprayed with one of the following solutions: water (control), 10 μL L −1 1-methylcyclopropene (1-MCP), or 0.5 g L −1 2-chloroethanephosphonic acid (ethephon). After harvest, ethylene production rate, respiration intensity, energy charge (EC), activities of energy metabolism-related and antioxidant enzymes, and malondialdehyde (MDA) content were measured. Results showed that 1-MCP enhanced the activities of superoxide dismutase, H + -adenosine triphosphatase, Ca 2+ -adenosine triphosphatase, succinic dehydrogenase, and cytochrome c oxidase, increased adenosine triphosphate (ATP) content, maintained high EC levels, inhibited respiration intensity, reduced peroxidase (POD) and polyphenol oxidase (PPO) activity and MDA accumulation, and prolonged vase life. Ethephon promoted ethylene production and respiration intensity, increased POD and PPO activity, reduced ATP content and EC levels, and accelerated senescence. Our results support a novel role for ethylene control in regulating senescence of ‘Carola’.
研究领域:
植物生理学
·
园艺学
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2017
·
IF 3.181
Guan-Lin Chen,Song-Gen Chen,Yi Xiao,Nan-Lin Fu
In order to find new sources of natural antioxidants, total phenolic content (TPC) and total flavonoid content (TFC) of 30 flowers in their free, esterified and insoluble-bound forms were determined. Rosa rugosa Thunb (pink) showed the highest TPC, and Osmanthus fragrans had the highest TFC. The antioxidant activities of 30 flowers were determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (DPPH), ferric reducing antioxidant power (FRAP), and trolox equivalent antioxidant capacity (TEAC) assays. Rosa rugosa Thunb (purple) and Rosa rugosa Thunb (pink) had the highest DPPH (612.79 and 544.75 μmol Trolox/g DW), FRAP (273.10 and 301.14 μmol Trolox/g DW) and TEAC (1013.71 and 937.19 μmol Trolox/g DW) value. Furthermore, several phenolic compounds were detected using ultra performance liquid chromatography (UPLC) technique, and (+)-catechin, ferulic acid, isoquercitrin, and quercitrin were widely found in these flowers. The results implied that the flowers were important natural sources of bioactive components with higher antioxidant capacities for use in the food and pharmaceutical industries.
研究领域:
植物学
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食品科学
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药理学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Liuqing Xiao,Yuxing Huang,Yu Luo,Bo Yang,Yizhen Liu,Xuechang Zhou,Junmin Zhang
Cotton fiber is an abundant natural material, which has a long history of application in human daily life. However, a report on using such material in catalysis for organic synthesis is rare. We envisaged that the hydroxyl groups on the surface of cotton fiber could be utilized for functionalization and further immobilization of organic catalysts. In this report, we demonstrate the facile functionalization of cotton fiber by growing polymer brushes on its surface and further anchoring of Rose Bengal (RB) organic photocatalyst. This novel composite cotton photocatalyst demonstrated high efficiency in catalyzing cross-dehydrogenative coupling reactions and N-demethylation reactions with irradiation of visible light. The catalytic reaction can be facilely scaled up by a homemade circulating flow reactor.
研究领域:
化学工程
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材料科学
·
有机合成
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）