National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An investigation was carried out to know the effect of storage temperature on various parameters of extracted pigment from roselle (Hibiscus sabdariffa L.) calyces for edible colour. For knowing the storage stability of extracted pigment, it was kept for 3 months in both ambient and refrigerated conditions. In storage under ambient and refrigerated condition, a decreasing trend were observed in the anthocyanin content, titratable acidity, total antioxidants in the extracted pigment obtained by different methods of extraction upon storage under both conditions. At 90 days after storage at ambient and refrigerated condition, the anthocyanin content of 802.62 and 1091.92 mg 100 ml-1, titratable acidity 9.73 and 10.18 per cent and total antioxidants of 32.06 mg 100 ml-1 and 43.02 mg 100 ml-1 were found be highest in treatment ethanol acidified with 1.5 N HCl. An increasing trend was observed in the pH of extracted pigment obtained by different methods of extraction upon storage and it was highest 3.78 and 3.72 was found in treatment of fermentation of calyce (T5) in under both ambient and refrigerated conditions. Overall from the present investigation, the treatment of ethanol acidified with 1.5 N HCl was found to be the best with highest anthocyanin retention and total antioxidants compare to all other treatments which can used for large scale extraction of biocolour from roselle calyces.
Citations |
 |
 |
 |
 |
