Study On Quality Standard Of Processing Wheat Bran Accessories

Objective:Wheat bran is a commonly used processing accessories,bran stir-fry can enhance the Splenic effect of Chinese medicine and ease the dryness.At present,there is no basis for quality inspection of wheat bran except for individual provincial processing specifications.This experiment is based on the collection of samples from sources throughout the country,with reference to the quality standard project of Chinese herbal medicine tablets in Chinese Pharmacopoeia,to study the quality standards for the preparation of bran,to formulate scientific and reasonable draft standards.Provide experimental basis for wheat bran declaration of national or local standards.Methods:Referring to the 2015 edition of the Chinese Pharmacopoeia and the National standards of the People's Republic of China,and using traditional methods combined with modern technologies(chemical identification methods,instrument analysis),a total of 10 batches of wheat bran used by commercially available or traditional Chinese medicine chip factories throughout the country were analyzed for quality,Including:traits,microscopy,thin layer chromatography,moisture,total ash,acid insoluble ash,heavy metals(copper,lead,cadmium,arsenic,Mercury),pesticide residues(organochlorine,organophosphorus),microbial limits,and aflatoxin tests and polysaccharides,Determination of free amino acid and total dietary fiber content.The appearance,content and efficacy of Astragalus albopictus were investigated by different grain sizes of wheat bran.Results:The bran is irregularly laminated or shredded.The outer surface is yellow,smooth,slightly shiny,and the inner surface is white or yellow-white,rough,pink,light,soft,slightly fragrant,and light in taste.The main characteristics of wheat bran were observed microscopically:starch grains,pericarp epidermal cells,quail cells,ball-heart residual cells,non-glandular hairs,and paste powder grains.The water content is 6.05%to9.86%,the total ash content is 4.60%to 7.17%,and the acid insoluble ash content is 0.1%to 0.3%.To provide reference for the establishment of wheat bran quality standards.The safety of wheat bran was determined as follows:Copper content ranges from 11.35 to 21.6 mg/kg,lead content ranges from0.186 to 1.4715 mg/kg,cadmium content ranges from 0.0117 to 0.1514 mg/kg,arsenic content ranges from 0.006 to 0.044 mg/kg,Mercury elements The content of five heavy metals ranged from 0.012 to 0.043 mg/kg.With the exception of copper,other results are in line with the"Green Industry Standards for the Import and Export of Medicinal Plants and Agents"issued and implemented by the Ministry of Foreign Trade and Economic Cooperation of China in 2001.Pesticide residues of organochlorine and organophosphate in wheat bran were also determined.Organochlorine:containing a total of666(BHC sum)are all less than 0.002 mg/kg with no detection of gamma-BHC,delta-BHC;The total droplet drops(DDT)are less than 0.005mg/kg;Organophosphorus:all of them were lower than 0.0006mg/kg;All of them were lower than 0.006mg/kg;It was lower than 0.006mg/kg.The fruit was less than 0.003mg/kg and was not detected,which was consistent with the maximum pesticide residue limit in food safety national standard food.Microbial results:The total number of aerobic bacteria in wheat bran is1×10~3cfu/g to 6×10~3cfu/g,and the total number of molds and yeasts is2×10~2cfu/g to 1×10~3cfu/g.The content of polysaccharide was determined by ultraviolet spectrophotometry from 0.90%to 1.08%in wheat bran.The content of amino acids is 11.2%to 15.26%.The content of total dietary fiber in wheat bran was32%to 49.3%.Different sizes of wheat bran were used to make white,which had a certain effect on the appearance color and impurities.The impact on the content,particle size,the greater the processed atractylodes lactone content is higher,especially atractylodes lactone?most significantly;There was no significant difference in efficacy.Conclusion:The results showed that there were some differences in wheat gluten quality across the country,and the quality standard of wheat bran was determined by analysis.The project includes traits,moisture content,no more than 10.0%,7.0%of ash,microbial limit(wheat bran),and no more than10~4 aerobic bacteria per 1cfu/g.The total number of molds and yeasts should not exceed 10~2cfu/g;Total amino acids should not be less than10.0%(fermented)and total dietary fiber should not be less than 35.0%.It provides important experimental basis for the national related departments to formulate the wheat bran standard.