In this study,the effects of drying temperatures,radiation distances and material loads on the quality of Acetes by infrared assisted hot air drying techniques were investigated.The mass fraction of free amino acids of Acetes was determined by the automatic amino acid analysis
and the volatile compounds were analyzed by the solid phase microextraction gas chromatographymass spectrometry(SPME-GC-MS).The results showed that the ideal color and TBA value were achieved at the conditions of drying temperature 60 ℃,material load 1.5kg/m2 and radiation distance 15cm.The content of free amino acid in dried Acetes increased by 282%,267%,257%,
222%at 50,60,70,80℃respectively.The Arg,Glu,Ala,Val,Met attributed greatly to the flavor of Acetes.With the increase of temperature,the content of free amino acid decreased accordingly.According to GC-MS analysis,19,54,54,55and 48volatile compounds were detected in fresh Acetes and dried Acetes at 50,60,70,80 ℃ respectively.The contents of alkanes,alcohols and N-containing compounds in volatile compounds increased significantly in dried Acetes.
ZHOU Yao,ZHANG Jianyou
. Study on the quality of Acetes by infrared assisted hot air drying techniques[J]. Bulletin of Fermentation Science and Technology, 2017
, 46(2)
: 121
-128
.
DOI: 10.16774/j.cnki.issn.1674-2214.2017.02.011