Design and Optimization of Modified Atmosphere Packaging for black carrot (Dacus carota L.)
Loading...
Files
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Punjab Agricultural University, Ludhiana
Abstract
The present study was undertaken to Design and optimization of Modified
Atmosphere Packaging (MAP) for black carrot (Dacus carota L.) to obtain the maximum
shelf life on the basis of quality attributes and sensory evaluation during the storage study
experiment. Respiration and transpiration rates of black carrot at different temperatures viz. 5,
10 and 15°C were determined. The respiration rate was described assuming the mixed model
inhibition in the enzyme kinetics model. Arrhenius relationship was used to explain the
temperature dependence of respiration rate, respiratory quotient and transpiration rate of fresh
black carrot. A theoretical analysis for design of MAP for selection of appropriate packaging
film was carried out by matching the data obtained in respiration study with the permeabilities
of commercially available packaging films. Black carrot was packed in LDPE and stored
under different conditions such as film thickness: 100, 150, 200 gauge; package fill weight =
100, 300, 500g; level of perforations: 0, 2, 4; storage temperature: 5, 10, 15°C. The qualitative
analysis of black carrot throughout the storage study was done in terms physiological loss in
weight, total colour difference, firmness, total soluble solids, antioxidants, flavonoids and
anthocyanins. Sensory evaluation was done on the basis of visual appearance, odour rating
and water accumulation. The study also revealed that the low temperature storage better
retained the quality and quantity of fresh black carrot during its storage. MAP along with low
temperature storage helped in enhancing shelf life of fresh black carrot upto 24 days. The
optimized conditions obtained for shelf life extension of black carrot under MAP by using
response surface methodology was temperature: 5°C, film thickness: 200 gauge, fill weight:
500 g, perforations: 0.
Description
Keywords
null