Record Details

Effect of pectin methyl esterase and Ca2+ ions treatment on antioxidant capacity, shelf-life and quality of minimally processed pomegranate (Punica granatum L.) arils.

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Effect of pectin methyl esterase and Ca2+ ions treatment on antioxidant capacity, shelf-life and quality of minimally processed pomegranate (Punica granatum L.) arils.
Minimally processed pomegranate arils
 
Creator Kumar S
Kumar R
Nambi VE
 
Subject Minimal processing
Pomegranate arils
Pectin methyl esterase
Response surface methodology
Shelf life
 
Description Not Available
Pomegranate fruits are difficult to peel and once peeled, extracted arils have very short shelf-life. Therefore, present investigation was carried out to extend the shelf life of minimally processed pomegranate arils using pectin methyl esterase (PME) and CaCl2 treatment during refrigerated storage. The arils of freshly harvested pomegranate fruits (Punica granatum L.) were treated with different concentrations of food-grade PME (50-300 units) and calcium ions (0.5-2.0 % as CaCl2) for a period of 5-30 min using response surface methodology. Treated and untreated arils were then packed in low density polyethylene bags (25μ) and maintained under low temperature (5oC; 90% RH) for evaluating the physical, biochemical and microbial quality of pomegranate arils at four days interval. Physiological loss in weight increased during storage but no food-borne pathogens were found during 28 d of cold storage in treated arils. Color and firmness of both treated and untreated arils decreased during storage but it was better maintained in treated arils. The firmness was found to be 0.630 N in treated samples compared to untreated one (0.511 N) after 20 d of storage. Total antioxidant capacity, ferric reducing antioxidant power, polyphenol oxidase and lipoxygenase activities increased during storage. The treatment with 249.33 units of PME and 1.70 % CaCl2 for an immersion time of 24.93 min was found to be most effective treatment for maintaining the quality of minimally processed arils for longer period. Sensory score was also higher in treated pomegranate arils that were quite acceptable even after 20 d of referigerated storage as against 12 d for untreated ones.
The work which is being submitted for publication is part of project no. 8192 approved by the institute. The authors are thankful to Indian Council of Agricultural Research for funding this research through institute project and to Dr. Dharam Singh Chopra (Ex-Prof. & Head, Department of Biochemistry, CCSHAU, Hisar, India) for meticulous language polishing of this manuscript. The complimentary PME enzyme sample provided by M/s Advanced Enzymes Technologies Limited, Thane, India, for this research is gratefully acknowledged.
 
Date 2020-07-31T10:03:06Z
2020-07-31T10:03:06Z
2016-03
 
Type Research Paper
 
Identifier Not Available
0254-8704 (Print); 2394-0379 (Online)
http://krishi.icar.gov.in/jspui/handle/123456789/38685
 
Language English
 
Relation Not Available;
 
Publisher Triveni Enterprises Lucknow, India