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Paper Information

Journal:   JOURNAL OF FOOD RESEARCH (UNIVERSITY OF TABRIZ)   2012 , Volume 22 , Number 2; Page(s) 131 To 140.
 
Paper: 

EFFECT OF STORAGE AT DIFFERENT TEMPERATURES ON MOISTURE CONTENT, TOTAL SOLUBLE SOLIDS, ACIDITY AND PH OF DATES (KABKAB VARIETY)

 
 
Author(s):  CHERAGHI DEHDEZI S.*, HAMDAMI N.
 
* DEPARTMENT OF FOOD SCIENCE AND TECHNOLOGY, SHOUSHTAR BRANCH, ISLAMIC AZAD UNIVERSITY, SHOUSHTAR, IRAN
 
Abstract: 

One of the most important problems in date processing is unsuitable storage conditions and packaging type. In this research date fruits (Kabkab variety) were packed within aerobic atmosphere and vacuumed PA/PE pouches and stored at different temperatures (-20, 4, 25 and 40 oC). The samples were evaluated for different chemical parameters (moisture content, total soluble solids, titratable acidity and pH) monthly during the storage period up to 6 months. The storage temperatures and time greatly (P<0.01) affected all chemical parameters tested in date fruits during storage. Packaging type had a significant effect (P<0.01) on total soluble solids, titratable acidity and pH of dates, but did not affect moisture content. A significant decrease of moisture content was detected for all samples throughout the storage period. However, it was noted that moisture decreasing rate was significantly greater at 40 oC compared to other storage temperatures. The titratable acidity of vacuum packed dates stored at -20 oC and 4 oC was lower than the other samples. A significant increase of total soluble solids was observed for all samples during storage.

 
Keyword(s): STORAGE, PACKAGING, DATE PALM, CHEMICAL PROPERTIES, VACUUM, AEROBIC ATMOSPHERE
 
References: 
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