Effect of dehydration on the quality and storage stability of immature dates (Pheonix dactylifera)

Kulkarni, S. G. and Vijayanand, P. and Aksha, M. and Reena, P. and Ramana, K. V. R. (2008) Effect of dehydration on the quality and storage stability of immature dates (Pheonix dactylifera). LWT - Food Science and Technology, 42 (2). pp. 278-283.

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Abstract

Dates (Pheonix dactylifera) harvested from Kutch district of Gujarat, India were processed for the development of dehydrated dates. Dates grown in the Kutch region of Gujarat are harvested before maturation, i.e. Khalal stage to prevent spoilage caused due to rains. The processing and dehydration conditions for the preparation of dehydrated dates from immature date fruits were evaluated. Processing of dates by blanching in water at 9671 1C and subsequent dehydration at 6072 1C for 18–20 h resulted in good quality dehydrated dates as compared to the dates dried without heat treatment. The dehydrated dates were found to be acceptable with respect to colour, flavour, taste and overall quality. The dehydrated dates contained a total sugars of 520 g kg�1, reducing sugars of 415.1 g kg�1, tannins 13.5 g kg�1 and ascorbic acid 33.7mgkg�1. Equilibrium relative humidity (ERH) of the dehydrated dates was found to be 75.9% with an initial moisture content of 159 g kg�1. The dehydrated dates packed in 75 m low-density polyethylene packaging material were shelf stable for 6 months at room temperature. The dehydrated dates remained acceptable during the storage period.

Item Type:	Article
Uncontrolled Keywords:	Dates; Dehydration; Date processing; Storage stability; Date quality characteristics; Date maturity
Subjects:	600 Technology > 08 Food technology > 06 Preservation and Storage > 02 Drying and Dehydration 600 Technology > 08 Food technology > 24 Fruits
Divisions:	Fruit and Vegetable Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	18 Aug 2008 11:18
Last Modified:	30 Dec 2016 10:54
URI:	http://ir.cftri.res.in/id/eprint/8721

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