Research On Brewing Process And Flavor Substances Detection Of Litchi Mead And Vinegar

This paper studies the brewing process of litchi honey wine and litchi honey vinegar,and working on the organic acids, amino acids and volatile aroma components of litchi honey wine and litchi honey vinegar. The results show that :(1)Use the litchi honey as raw material,angel high active dry yeast BV818 for fermentation,inoculation amount is 0.325%(w/v)、initial sugar concentration is 26%(w/v)、supernatant added to rape pollen is 0.05%(v/v)、the temperature of fermentation is 30℃,after 8d fermentation,alcohol can reach 8.2%(v/v).When the content of HACC is 0.3( g/L),The reaction time is 36 h,the light transmittance can reach 98.61%,the effect of clarify is better.(2)Use the one-step fermentation make the lychee honey vinegar.Use the litchi honey as raw material,use Hu Niang 1.01 for fermentation,initial sugar concentration is 14%(w/v)、inoculation amount is 1.00%(w/v)、supernatant added to rape pollen is 0.15%(v/v)、the initial p H value is 6.0、initial alcohol degree is 5%、the temperature of fermentation is30℃,after 8d fermentation,the total acid can reach 0.53g/100 m L,the total sugar is 7.2%(w/v),alcohol can reach 1.8°(v/v).When the content of HACC is 0.10%(v/v),The reaction time is 12 h,light transmittance can reach 72.5%,the effect of clarify is better.(3)Through the high performance liquid chromatography,the litchi honey wine contains oxalic acid, tartaric acid, pyruvic acid, malic acid, alpha- ketoglutaric acid, lactic acid and citric acid and other organic acids;contains aspartic acid, glutamic acid, glycine, histidine,arginine, alanine, tyrosine, cysteine, valine, isoleucine and lysine and other amino acids.Detection by gas chromatography- mass spectrometry,There are 19 kinds main aroma components in litchi wine,including alcohols, esters, acids, aldehydes, ketones and phenols.(4)Through high performance liquid chromatography,the litchi honey vinegar contains oxalic acid, tartaric acid, pyruvic acid, malic acid, alpha- ketoglutaric acid, lactic acid and citric acid and other organic acids;Containing serine, glycine, threonine, alanine, tyrosine and leucine.Detection by gas chromatography- mass spectrometry,There are 25 kinds main...