Synthesis of haptens and gold-based immunochromatographic paper sensor for vitamin B6 in energy drinks and dietary supplements

Nano Research ◽  
2021 ◽  
Author(s):  
Lu Zeng ◽  
Xinxin Xu ◽  
Shanshan Song ◽  
Liguang Xu ◽  
Liqiang Liu ◽  
...  
Keyword(s):  
Dietary Supplements ◽  
Vitamin B6 ◽  
Energy Drinks ◽  
Paper Sensor

scholarly journals Energy drinks and other dietary supplement use among adolescents attending secondary schools in Trinidad and Tobago

2014 ◽  
Vol 17 (10) ◽  
pp. 2156-2165 ◽  
Author(s):  
Terence J Babwah ◽  
Rohan G Maharaj ◽  
Paula Nunes
Keyword(s):  
Side Effects ◽  
Secondary Schools ◽  
Trinidad And Tobago ◽  
Dietary Supplements ◽  
Dietary Supplement ◽  
Sleep Disturbances ◽  
De Novo ◽  
Energy Drinks ◽  
Cross Sectional ◽  
Supplement Use

AbstractObjectiveThe objective of the present study was to determine the knowledge and practices among Trinidad and Tobago school-attending adolescents towards energy drinks (ED), alcohol combined with energy drinks (AwED), weight-altering supplements (WAS) and vitamin/mineral supplements (VMS) and their experience of adverse effects associated with such use.DesignA cross-sectional, proportionate, stratified sampling strategy was adopted using a self-administered, de novo questionnaire.SettingSecondary schools throughout Trinidad and Tobago.SubjectsStudents aged 15–19 years.ResultsFive hundred and sixty-one students participated, an 84 % response rate; 43·0 % were male, 40·5 % East Indian and 34·1 % mixed race. VMS, ED, WAS and anabolic steroids were used by 52·4 %, 44·0 %, 8·9 % and 1·4 % of students, respectively, with 51·6 % of ED users using AwED. Predictors of use of AwED were males and students who played sport for their school (OR = 1·9; 95 % CI 1·2, 3·2 and OR = 2·6; 95 % CI 1·4, 4·7, respectively). Predictors of ED use were males and attendees of government secondary schools (OR = 1·7; 95 % CI 1·1, 2·4 and OR = 1·7; 95 % CI 1·2, 2·4, respectively). Side-effects, mainly palpitations, headaches and sleep disturbances, were reported in 20·7 % of dietary supplement users.ConclusionsMany adolescent students in Trinidad and Tobago use dietary supplements, including ED and AwED, and about one-fifth of users experience side-effects. Identification of students at risk for ED, AwED and WAS use and education of students about the dangers of using dietary supplements need to be instituted to prevent potential adverse events.

Determination of Pyridoxine in Dietary Supplements by Liquid Chromatography with UV, Fluorescence, and Mass Spectrometric Detection: Single-Laboratory Validation

2013 ◽  
Vol 96 (2) ◽  
pp. 265-275 ◽  
Author(s):  
Robert J Goldschmidt ◽  
Wayne R Wolf
Keyword(s):  
Dietary Supplements ◽  
Vitamin B6 ◽  
Internal Standard ◽  
Reversed Phase ◽  
Reversed Phase Chromatography ◽  
Uv Fluorescence ◽  
Ms Detection ◽  
Different Types ◽  
Single Laboratory

Abstract A single-laboratory validation was performed for a method that determines pyridoxine, one of the B6 vitamers, in dietary supplements using LC and UV, fluorescence, or MS detection. The method was adapted for use with either HPLC or ultra-performance LC (UPLC). Pyridoxine is extracted from samples using 0.1 M formic acid, and specific conditions are adjusted for each of the different types of supplement materials examined. Reversed-phase chromatography with C18-based columns is used in both HPLC and UPLC. Fluorescence detection, often used in chromatographic analyses of vitamin B6 in foods, was successfully used here, but offered no great advantages over UV detection in the supplement materials tested. MS detection was also satisfactory, although use of an internal standard was required. Accuracy of the method was demonstrated in several ways, including use of a standard reference material. Precision and repeatability of the method were found acceptable by analysis of variance and HorRat repeatability calculations.

scholarly journals Dietary Supplements Containing the Upper Tolerable Limit Amount or More of Pyridoxine (P24-034-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Marina Shkayeva
Keyword(s):  
Dietary Supplements ◽  
Dietary Supplement ◽  
Vitamin B6 ◽  
National Institutes Of Health ◽  
Age Group ◽  
Lactating Women ◽  
Funding Sources ◽  
The Usa ◽  
Data Source ◽  
Serving Size

Abstract Objectives To estimate what proportion of pyridoxine containing-dietary supplements available in the USA contain higher than the upper tolerable limit of pyridoxine. Methods The Dietary Supplement Label Database (DSLD) from the National Institutes of Health was chosen as the data source to characterize how many supplements contain an amount of pyridoxine (vitamin B6) that is at the upper tolerable limit (UL) or above. DSLD was searched for all dietary supplement labels that contain pyridoxine. Label data was downloaded into an excel spreadsheet and characterized based on target age group and amount of pyridoxine contained per serving size. Results A total of 5615 pyridoxine-containing dietary supplement label entries were reviewed. Of these labels, 4871 were for patients 4 years and older, 106 were for pregnant or lactating women, 148 were for toddlers ages 1–4 years, 8 were for infants less than 1 year of age, and the rest did not specify a target age group. From the dietary supplements targeting people 4 years and older, 288/4871 (5.9%) contained 100 mg of pyridoxine or more per serving, which is the UL for adults 19 years and older; 330/4871 (6.8%) contained 80 mg of pyridoxine or more, the UL for children 14–18 years; 449/4871 (9.2%) contained 60 mg of pyridoxine or more, the UL for children 9–13 years; 1031/4871 (21.1%) contained 40 mg of pyridoxine or more, the UL for children 4–8 years old. From the dietary supplements targeting pregnant or lactating women, 2/106 (1.8%) contained 100 mg pyridoxine per serving which is the UL for this patient population. From dietary supplements targeting toddlers ages 1–4 years, 1/148 (0.6%) contained 30 mg of pyridoxine which is the UL for this target group. Finally, because there is not an established UL for infants 12 months or less of age, those labels could not be characterized. Conclusions In spite of the ULs set by the Institute of Medicine's Food & Nutrition Board, an alarming number of manufactures produce dietary supplements that contain pyridoxine at the UL level or higher per serving size. This poses a significant safety risk to patients consuming dietary supplements. Funding Sources None.

scholarly journals Estimating caffeine intake from energy drinks and dietary supplements in the United States

2014 ◽  
Vol 72 ◽  
pp. 9-13 ◽  
Author(s):  
Regan L Bailey ◽  
Leila G Saldanha ◽  
Jaime J Gahche ◽  
Johanna T Dwyer
Keyword(s):  
United States ◽  
Dietary Supplements ◽  
Energy Drinks ◽  
The United States ◽  
Caffeine Intake

scholarly journals Conventional foods, followed by dietary supplements and fortified foods, are the key sources of vitamin D, vitamin B6, and selenium intake in Dutch participants of the NU-AGE study

2016 ◽  
Vol 36 (10) ◽  
pp. 1171-1181 ◽  
Author(s):  
Agnes A.M. Berendsen ◽  
Lilou E.L.M. van Lieshout ◽  
Ellen G.H.M. van den Heuvel ◽  
Christophe Matthys ◽  
Szabolcs Péter ◽  
...  
Keyword(s):  
Vitamin D ◽  
Dietary Supplements ◽  
Vitamin B6 ◽  
Fortified Foods ◽  
Selenium Intake ◽  
Conventional Foods
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