Journal
COATINGS
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/coatings11030329
Keywords
coating; edible; peanut; transglutaminase
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Funding
- Italian Ministries of Foreign Affairs and International Cooperation (MAECI) [CUP: E68D20000670001]
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Edible coatings using mTG crosslinked whey protein-pectin are a promising alternative to enhance the shelf life of roasted peanut kernels, reducing peroxide value and water content while providing a better barrier effect to protect the kernels.
Edible coatings are a viable alternative method to enhance food shelf life that can be designed using different biopolymers. This study evaluated the effect of a whey protein-pectin coating reticulated by microbial transglutaminase (mTG) on improving roasted peanuts' shelf life. Peroxide value, water content, peanut color, and the solution's contact angle were studied. The latter was improved by the presence of the enzyme. The results showed that the presence of the coating on the peanut surface reduces the peroxide value and water content, probably as a consequence of an improved barrier effect due to the presence of mTG, which protects the kernel. Enzymatically reticulated whey protein-pectin coatings are a promising alternative to enhance the shelf life of roasted peanut kernels using natural ingredients.
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