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Effect of cashew gum-carboxymethylcellulose edible coatings in extending the shelf-life of fresh and cut guavas

Paper ID Volume ID Publish Year Pages File Format Full-Text
19831 43133 2015 7 PDF Available
Title
Effect of cashew gum-carboxymethylcellulose edible coatings in extending the shelf-life of fresh and cut guavas
Abstract

•Cashew gum–carboxymethylcellulose (CG–CMC) blends can be properly used as edible coating.•CG–CMC coatings minimizes mass loss in intact and processed guavas.•The coatings were effective in reducing fungal infestation on guava pulp.•The blend is effective in preserving guava peel color.

Cashew gum (CG) and carboxymethylcellulose (CMC) based formulations have been evaluated as protective edible coatings on intact and cut red guavas. Samples were coated by dipping in aqueous mixtures of 1% CG and 1% plasticizer (glycerol) for CMC additions of 1 and 2% wt. The fruit was stored at ambient conditions (25–28 °C, 76.0 ± 12.4% RH), and loss of mass, color of pulp and peel, and texture were assessed. Magnetic Resonance Imaging (MRI) was used to visualize the internal structure decay of the intact fruits. Both coatings resulted in a reduction of mass loss, preserving firmness and delaying skin color changes. When comparing after 12 day storage, the mass loss in cut coated samples (CG plus 2% wt of CMC) was 38.5% inferior than that measure to uncoated references. At large, both coating formulations reduced water loss and changes in color of the cut surfaces. MRI analysis showed that tissue decay took place mainly near the peel or around the peduncle region between 8 and 12 days of storage at room temperature.

Keywords
Pisidium guajava L.; Edible coatings; Cashew gum; Carboxymethylcellulose; Postharvest conservation; Minimally processed guavas
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Effect of cashew gum-carboxymethylcellulose edible coatings in extending the shelf-life of fresh and cut guavas
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Packaging and Shelf Life - Volume 5, September 2015, Pages 68–74
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us