Investigating the Factors Having the Important Role in the Standardization of Herbal Distillates’ Methanol Content

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Rafizadeh A ◽  
◽  
Shariati Sh ◽  
Safarzadeh Vishekaei MN ◽  
Honarchian Masihi P ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
National Standard ◽  
Blurred Vision ◽  
Methanol Intoxication ◽  
Effective Factors ◽  
Methanol Content ◽  
The Creation

Blurred vision leading to nervous blindness is the only symptom of chronic methanol intoxication that occurs following prolonged drinking some kinds of herbal distillates and has been motivated serious anxieties. The methanol content of these products is not usually measured which may be due to the lack of applicable standards in this regard. In this study, the methanol concentrations of some kinds of herbal distillates were quantified by two different methods to define the most effective factors in the determination of methanol permitted dose of these products. In this study, the methanol contents of 60 different samples were examined by a newly designed kit and Gas Chromatography methods, and finally, based on gained results some recommendations were presented about how standardization of herbal distillates’ methanol content. All samples have different concentrations of methanol that in some cases, their methanol content seems enough for the creation of chronic methanol intoxication. Also, access to an appropriate and efficient national standard for controlling of methanol content of herbal distillates seems to be necessary.

scholarly journals Quantification of Some Herbal Distillates’ Methanol to Evaluate a New Diagnostic Kit

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Farshid Saadat ◽  
Hossein Hassanian Moghadam ◽  
Nasim Zamani ◽  
Ali Rafizadeh
Keyword(s):  
Gas Chromatography ◽  
Quality Control ◽  
Food Industry ◽  
Chromotropic Acid ◽  
Chronic Type ◽  
Blurred Vision ◽  
Limit Of Quantification ◽  
Methanol Content ◽  
Industry Area

Methanol naturally exists in all plant products. In recent years, the consumption of certain kinds of herbal distillates has led to blurred vision, leading to neurotic blindness in Iran. The advanced methods needed for determination of methanol are not available in all parts of poor and developing countries. In this study, we evaluated some herbal distillates’ methanol with a new kit compared to gas chromatography for determining the efficacy of the kit. A gas chromatography apparatus was used to determine methanol concentration of 57 herbal distillates. At the same time, a spectrophotometer device was also used along with a newly designed kit based on the modified chromotropic acid method for the same purpose. All examined samples have different amounts of methanol from 21 to 770 mg/l. The methanol content of all samples was higher than the used kit’s limit of quantification (5 mg/l). The attained results by two used methods were very close together in both minimum (21 and 22 mg/l) and maximum (770 and 690 mg/l) amounts. The comparison of results was shown, and some of available herbal distillates in Iran have enough amounts of methanol to create chronic type of methanol poisoning. Our results suggested that the used kit had suitable efficacy for quantitative determination of herbal distillates’ methanol content. It was proved that the type of the herbal distillate did not affect the kit’s function. The new kit can be easily used with minimal equipment for quality control of herbal distillates in food industry area.

scholarly journals DETERMINAÇÃO DE ACETOÍNA E METANOL EM VINAGRES DE VINHO BRASILEIROS

2003 ◽  
Vol 21 (1) ◽  
Author(s):  
LUIZ ANTENOR RIZZON ◽  
ALBERTO MIELE
Keyword(s):  
Gas Chromatography ◽  
Red Wine ◽  
White Wine ◽  
High Variability ◽  
Methanol Content ◽  
Brazilian Legislation

Visou-se a caracterização do vinagre de vinho brasileiro, mediante determinação do teor de acetoína e de metanol. Analisaram-se 29 amostras de diferentes marcas comerciais de vinagre de vinho tinto e 18 de vinagre de vinho branco. As análises de acetoína e de metanol foram efetuadas mediante cromatografia a gás. Constatou-se variabilidade acentuada no teor de acetoína e de metanol do vinagre de vinho brasileiro. Detectou-se que 61,0% dos vinagres de vinho branco e 39,4% dos vinagres de vinho tinto apresentaram menos de 40 mg/L de acetoína. Observou-se, também, que 66,6% dos vinagres de vinho branco apresentaram menos de 25 mg/L de metanol e 53,6% dos vinagres de vinho tinto menos de 50 mg/L. O estabelecimento de limite mínimo pela legislação brasileira para a acetoína e o metanol do vinagre de vinho contribuiria para a determinação da genuinidade desse produto. A cromatografia a gás mostrou-se adequada para a determinação da acetoína e do metanol nos vinagres de vinho. DETERMINATION OF ACETOIN AND METHANOL IN BRAZILIAN WINE VINEGARS Abstract The aim of this work was to characterize Brazilian wine vinegars, by determination of acetoin and methanol content. Twenty-nine samples of different commercial red wine vinegars and 18 samples of white wine vinegars were analysed. The analyses of acetoin and methanol were made by gas chromatography. High variability in the acetoin and methanol contents were observed. It was remarked that 61.0% of the white wine vinegars and 39.4% of the red wine vinegars showed less than 40 mg/L of acetoin. It was showed that 66.6% of the white wine vinegars showed less than 25 mg/L of methanol and 53.6% of the red wine vinegars had less than 50 mg/L of this alcohol. The setting up of limitation by Brazilian legislation for the acetoin and methanol in the vinegar components contribute to its genuinity. The gas chromatography showed to be suitable, for acetoin and methanol determination in wine vinegars.

scholarly journals Ethanol and Methanol Levels in The Oplosan Liquor

2020 ◽  
Vol 8 (1) ◽  
pp. 28-36
Author(s):  
Angki Purwanti ◽  
Ni Putu Aryadnyani
Keyword(s):  
Gas Chromatography ◽  
Descriptive Study ◽  
Test Material ◽  
Cross Sectional ◽  
Mixed Liquor ◽  
Methanol Content ◽  
Ethanol Content ◽  
Alcoholic Drinks

Oplosan liquor is one form of illegal drink that is often found in police raids in various areas. The purpose of this study was to determine the ethanol and methanol levels in mixed liquor obtained from the results of the Sector Police raids in Cipayung District, East Jakarta, in 2017. This study was a cross-sectional descriptive study. Determination of ethanol and methanol levels is done by gas chromatography at the Daerah Khusus Ibukota Jakarta Health Laboratory. The sample in this study amounted to 14 samples. Based on the research obtained Ethanol content from test material (10.08-50.14)% v/v with an average (28,39±15,09)% v/v and methanol content is (0.08-2.04)% v / v with an average of (0,81±0,72)%v/v. Samples whose ethanol content is equivalent to alcoholic groups A, B, and C are 0%, six bottles (42.86%), and eight bottles (51.13%). All samples contained methanol with levels> 0.01% and were not packaged according to the requirements of the Regulation of the Indonesian Food and Drug Supervisory Agency No. 14/2016 (BPOM). It is suggested to do a follow-up in counseling related to mixed alcohol, especially for adolescents in this area. Further research is suggested to identify illegal drugs in the confiscated alcoholic drinks from this area. It is recommended to the Cipayung District Police to clean the area from mixed alcohol.

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