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Microbiological, Physicochemical, and Immunological Analysis of a Commercial Cashew Nut-Based Yogurt
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Microbiological, Physicochemical, and Immunological Analysis of a Commercial Cashew Nut-Based Yogurt
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Journal Article
Microbiological, Physicochemical, and Immunological Analysis of a Commercial Cashew Nut-Based Yogurt
2020
Overview
Nut-based milks and yogurts are gaining popularity, but may not offer the same benefits as dairy yogurts to consumers. Cashew nuts often cause severe allergic reactions, and cashew nut allergens are stable to several types of processing. To compare its characteristics to dairy yogurt and characterize the effects of fermentation on the Ana o 1–3 cashew nut allergens, a commercial yogurt made from cashew nuts (Cashewgurt) was evaluated for microbiological, physiochemical, and immunological properties. Average counts for lactobacilli and Streptococcus thermophilus were greater than 10 million colony forming units per milliliter, indicating the capacity to provide a health benefit. Cashewgurt pH and viscosity values were comparable to cow milk yogurts, and it was off white in color. SDS-PAGE analysis indicated a clear reduction in Ana o 1 and 2, and immuno-assay with polyclonal anti-cashew IgG antibody and cashew-allergic IgE indicated an overall reduction in allergen content. In contrast, SDS-PAGE, mass spectrometry, immunoblot, and ELISA all revealed that Ana o 3 was relatively unaffected by the fermentation process. In conclusion, Ana o 1 and Ana o 2 are sensitive to degradation, while Ana o 3 survives lactic acid bacterial fermentation during yogurt production. The analysis presented here indicates that cashew nut yogurt is not suitable for those with cashew nut allergy.
Publisher
MDPI
Subject
/ Bifidobacterium - classification
/ Bifidobacterium - isolation & purification
/ cashew
/ Commerce
/ Enterobacteriaceae - classification
/ Enterobacteriaceae - isolation & purification
/ Food Hypersensitivity - immunology
/ Humans
/ Lactobacillus - classification
/ Lactobacillus - isolation & purification
/ Nut Hypersensitivity - immunology
/ Streptococcus thermophilus - classification
/ Streptococcus thermophilus - isolation & purification
/ yogurt
