Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam最新文献_第8页

Research for stability of food products and functional foods 食品及功能性食品的稳定性研究

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-30 DOI: 10.47866/2615-9252/vjfc.3913

Ngan Le Viet, Huyen Trang Luu Thi, Xuan Nguyen Thi, Trang Vu Thi

{"title":"Research for stability of food products and functional foods","authors":"Ngan Le Viet, Huyen Trang Luu Thi, Xuan Nguyen Thi, Trang Vu Thi","doi":"10.47866/2615-9252/vjfc.3913","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3913","url":null,"abstract":"The study uses rapid aging and real-condition methods to assess the stability of frozen meat, yogurt and functional foods. The method of real conditions is applied to frozen meat and yogurt with the following factors being: temperature: -20°C ± 2°C; humidity: 100% for frozen meat and temperature: 4°C ± 2°C; humidity: > 80% for yogurt. The accelerated aging method is applied to functional foods in conditions: 35 ± 2°C, 45 ± 2°C, 55 ± 2°C, and humidity: 70 ± 5% in parallel assessment combination with real-time monitoring at 25 ± 2°C, and humidity 70 ± 5%. The results showed that the yogurt sample reached stability until the 45th day and did not reach from the 47th day due to layering and deposits at the bottom of the box. The frozen meat sample remained stable when monitored until the 12.6 months with all indicators. Functional food samples were estimated to reach stability of up to 40.3 months when using the Van't Hoff formula, 32.0 months when using the Q10 coefficient, and 36.8 months when monitored in real conditions. The results of the study indicate that the less stable criteria on each sample background are the basis for selecting evaluation criteria for subsequent studies that contribute to reducing the cost of monitoring. The difference in the time it takes to estimate the stability of the product when using different methods also helps manufacturers consider the appropriate evaluation method for their products.","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75109854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Probiotic characteristics of Bifidobacterium infantis isolated in Vietnam 越南婴儿双歧杆菌的益生菌特性

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-28 DOI: 10.47866/2615-9252/vjfc.3910

Như Quỳnh Bach Thị, Tuyet Lan Ninh Thị, Minh Huyen Nguyen Thi, Men Do Thi, Le Pham Thi, Dam Linh Mai Thi

引用次数: 0

Selection of priority unintentionally present chemical contaminants based on the example of rice retailed in the Russian Federation 根据在俄罗斯联邦零售的大米的例子，优先选择无意中存在化学污染物

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-28 DOI: 10.47866/2615-9252/vjfc.3907

Vladimirovna Zaitseva Nina, Zalmanovich Shur Pavel, Vladimirovich Suvorov Dmitry, Evgenjevich Zelenkin Sergey, Vladimirovna Nedoshitova Anna, Vjacheslavovna Stenno Elena

{"title":"Selection of priority unintentionally present chemical contaminants based on the example of rice retailed in the Russian Federation","authors":"Vladimirovna Zaitseva Nina, Zalmanovich Shur Pavel, Vladimirovich Suvorov Dmitry, Evgenjevich Zelenkin Sergey, Vladimirovna Nedoshitova Anna, Vjacheslavovna Stenno Elena","doi":"10.47866/2615-9252/vjfc.3907","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3907","url":null,"abstract":"Chemicals that are not subject to hygienic standards and yet are found in rice can be classified as unintentionally present chemicals in food products. However, these chemicals can pose a potential health hazard, which requires an assessment of the risk they represent. For this purpose, it is necessary to select priority potentially dangerous unintentionally present chemicals in rice. The study included five samples of rice from Cambodia, India, and Russia. Chemical element content studies were conducted on Agilent 7900 mass spectrometer (Agilent Technologies, Japan/Singapore) with an octopole collision/reaction cell (ORS) using the semi-quantitative analysis program for the mass spectrometer. The selection of priority unintentionally present chemical contaminants in rice was conducted in three stages. The researchers applied specific criteria to include chemicals in the further assessment at each stage. As a result of the evaluation of the selection of priority unintentionally present chemicals contained in rice sold through retail chains, a potential hazard category (PHC) was established, i.e., an integral characteristic of the potential hazard of an unintentionally present chemical contained in a food product, covering the possibility of ingestion of a specific chemical and its toxicity. Thus, in accordance with the PHC, aluminum was identified as priority potentially hazardous chemical contained in rice for further risk assessment since it corresponded to category I of the potential hazard.","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75382658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the hypoglycemic effect of mango leaf extract grown in Son La 山腊芒果叶提取物降血糖作用的研究

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-27 DOI: 10.47866/2615-9252/vjfc.3911

T. Nguyen Duc, Trang Nguyen Hoang Thu, Van Anh Nguyen Thi

引用次数: 0

Detection of class 1 integron-associated gene cassettes of multi-drug resistant Salmonella strains isolated from food at conventional markets in Ho Chi Minh city 胡志明市传统市场食品中多重耐药沙门氏菌1类整合子相关基因盒的检测

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-06 DOI: 10.47866/2615-9252/vjfc.3909

Anh Vu Truong Huynh, Khue Tu Nguyen Hoang, Ha Huynh Yen, Hai Chu Van

{"title":"Detection of class 1 integron-associated gene cassettes of multi-drug resistant Salmonella strains isolated from food at conventional markets in Ho Chi Minh city","authors":"Anh Vu Truong Huynh, Khue Tu Nguyen Hoang, Ha Huynh Yen, Hai Chu Van","doi":"10.47866/2615-9252/vjfc.3909","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3909","url":null,"abstract":"After Salmonella strains were isolated from food samples collected randomly at conventional markets in several districts in Ho Chi Minh city, we evaluated antibiotic resistance by Kirby-Bauer methods, and the serotype name was assigned according to ISO/TR 6579-3:2014 and class 1 integron was investigated by PCR technique. As a result, there were seven distinguished serovars, including S. Kentucky (8 strains); S. Infantis (4 strains); S. Agona and S. Potsdam (2 strains); S. Saintpaul, S. Braenderup, S. Indiana (01 strain); OMF:1,z6:UT and 7:1,z6:UT (01 strain). The rate of multidrug-resistance Salmonella serovars carrying class 1 integron was 100% (21/21). The gene cassette region of class 1 integron accounted for 85.71% (18/21). The presence of mobile genetic factors in Salmonella in the study suggests that the bacteria can transmit or receive antibiotic resistance genes from other bacterial species in the natural environment. In addition, the research results provide scientific evidence for management decisions and raise awareness of effective antibiotic use in Ho Chi Minh City, Vietnam.","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72854130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High performance liquid chromatography analytical method for glutaraldehyde determination in disinfectants 高效液相色谱法测定消毒剂中戊二醛

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-06 DOI: 10.47866/2615-9252/vjfc.3912

Thanh Hoa Mac Thi, Thanh Nguyen Ha, Ngoc Lan Dang Thi, Thanh Ha Pham Thi, Thanh An Vu Thi, Khanh Cao Cong

引用次数: 0

Determination of glucosamine in dietary supplement samples by capillary electrophoresis using capacitively coupled contactless conductivity detector (CE-C4D) 电容偶联非接触式电导率检测器(CE-C4D)毛细管电泳法测定膳食补充剂样品中的葡萄糖胺

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-04 DOI: 10.47866/2615-9252/vjfc.3935

Huyen My Dang Thi, Ngoc Ly Nguyen Thi, Nhi Do Yen, Diu Dinh Thi, Lan Phuong Kieu Thi, Anh Hoang Quoc, Nguyen Pham Hoang, Quynh Anh Pham Thi, Son Tran Cao, Minh Thu Nguyen Thi, Huy Nguyen Quang, Anh Huong Nguyen Thi

{"title":"Determination of glucosamine in dietary supplement samples by capillary electrophoresis using capacitively coupled contactless conductivity detector (CE-C4D)","authors":"Huyen My Dang Thi, Ngoc Ly Nguyen Thi, Nhi Do Yen, Diu Dinh Thi, Lan Phuong Kieu Thi, Anh Hoang Quoc, Nguyen Pham Hoang, Quynh Anh Pham Thi, Son Tran Cao, Minh Thu Nguyen Thi, Huy Nguyen Quang, Anh Huong Nguyen Thi","doi":"10.47866/2615-9252/vjfc.3935","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3935","url":null,"abstract":"The quantification of glucosamine in dietary supplements was investigated by using capillary with capacitively coupled contactless conductivity detection (CE-C4D). Optimal conditions included electrophoresis buffer solution 10 mM Tris/Ace; pH = 5,0; sample injection height 25 cm; sample injection time 30 s; separation voltage 20 kV. The limit of detection (LOD) and the limit of quantification (LOQ) of glucosamine were 8.00 ppm and 26.67 ppm, respectively. Calibration curve was constructed over the range from 20 to 1000 ppm giving a good linear correlation coefficient (R2 = 0.9993). The relative standard deviation (RSD) ranged from 1.28% to 2.33% (n = 3) and the recovery efficiency ranged from 95.2 to 102.3% which indicated good precision and trueness of our method. The method was applied to determine glucosamine in 4 dietary supplement samples randomly collected at the local markets. The CE-C4D results were compared with those obtained by reference HPLC-FLD method, showing good agreement between the two methods (relative error < 15%).","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"103 1 Suppl E 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89675667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous determination of acetyl vardenafil, homosildenafil, hydroxy acetildenafil and mirodenafil by CE-C4D CE-C4D法同时测定乙酰伐地那非、异西地那非、羟基伐地那非和咪洛地那非的含量

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-06-03 DOI: 10.47866/2615-9252/vjfc.3942

Lan Anh Hoang Thi, Oanh Nguyen Thi, Diu Dinh Thi, Nhi Do Yen, Bach Pham Gia, Trang Vu Thi, Anh Huong Nguyen Thi, Hong Hao Le Thi

{"title":"Simultaneous determination of acetyl vardenafil, homosildenafil, hydroxy acetildenafil and mirodenafil by CE-C4D","authors":"Lan Anh Hoang Thi, Oanh Nguyen Thi, Diu Dinh Thi, Nhi Do Yen, Bach Pham Gia, Trang Vu Thi, Anh Huong Nguyen Thi, Hong Hao Le Thi","doi":"10.47866/2615-9252/vjfc.3942","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3942","url":null,"abstract":"Dietary supplements are currently popular because of their natural origin, especially male enhancement products. However, some of these products have been found to contain erectile dysfunction drugs that inhibit the enzyme phosphodiesterase-5 (PDE-5), leading to adverse effects on human health. In this study, capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) was used to determine four PDE-5 inhibitors (including acetyl vardenafil, homosildenafil, hydroxy acetildenafil and mirodenafil) in dietary supplement samples. The optimum analytical conditions included electrolyte solution of 20 mM arginine (Arg)/acetic acid (Ace)/acetonitrile (ACN) 20% pH 6.5, silica capillary 50 μm inner diameter with effective length of 50 cm, separation voltage of 20kV, siphoning hydrodynamic injection at a height of 25 cm for 30 s. At the optimum analytical conditions, the limits of detection of acetyl vardenafil, homosildenafil, hydroxy acetildenafil, and mirodenafil were 2.1, 1.6, 2.3, and 1.3 mg/L, respectively. The analysis of four PDE-5 inhibitors by CE-C4D also showed good repeatability (< 5 %) and recovery (> 97 %). This method was further applied to simultaneously determine the amount of acetyl vardenafil, homosildenafil, hydroxy acetildenafil, and mirodenafil in three functional products. All four PDE-5 inhibitors were not detected in these samples. To demonstrate the utility of this method, the mixture of four PDE-5 inhibitors standard solutions was added to three samples. The recovery was between 98.8 % and 100.6%, illustrating the potential applicability of the method of determining PDE-5 inhibitors in dietary supplement samples.","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82628125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of the process for extracting and isolating hesperidin from Chenbi to establish as a reference standard 建立陈碧中橙皮苷的提取分离工艺，并作为参比标准品

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-03-30 DOI: 10.47866/2615-9252/vjfc.3885

Thanh An Vu Thi, Khanh Cao Cong, Thanh Hoa Mac Thi, Son Tran Hung, Thanh Thuy Do Thi, Huyen Nguyen Thi

引用次数: 0

Comparison of antibacterial activities of some kinds of honey in Vietnam 越南几种蜂蜜抑菌活性比较

Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam Pub Date : 2022-03-29 DOI: 10.47866/2615-9252/vjfc.3886

N. Phạm, Hoang Luu, Trang Vu Thu, To Quynh Cung Thi

{"title":"Comparison of antibacterial activities of some kinds of honey in Vietnam","authors":"N. Phạm, Hoang Luu, Trang Vu Thu, To Quynh Cung Thi","doi":"10.47866/2615-9252/vjfc.3886","DOIUrl":"https://doi.org/10.47866/2615-9252/vjfc.3886","url":null,"abstract":"Honey is a natural product with a variety of uses. The antibacterial activity of honey is one of the key factors that make honey beneficial. The study aims to compare some quality index and antibacterial capacity of some main kinds of honey in Vietnam (determined by the diameters of the inhibition zones, the minimum inhibitory concentration - MIC, and the bactericidal concentrations - MBC). The results showed that the honey samples met the quality requirements of TCVN 12605:2019 for honey, including free reducing sugar content (ranging 67 - 72 g/100 g), diastase activity (ranging from 5.58 ± 0.46 to 25.27 ± 0.05 Schad), HMF (5-Hydroxymethylfurfural) content (ranging from 18.06 ± 0.09 to 23.80 ± 0.25 mg/kg). All honey samples exhibited antibacterial activity against all eight strains of bacteria studied as follows: the diameters of the inhibition zones ranged from 8.50 ± 0.29 to 22.33 ± 1.53 (mm), MIC ranged from 0.15 ± 0.00 to 0.90 ± 0.14 (g/mL). Honey from coffee and rubber flowers showed strong bactericidal ability at MBC concentration from 0.25 g/mL.","PeriodicalId":12896,"journal":{"name":"Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79151388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0