Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink

In recent years, green and healthy foods have attracted much attention. Plant-based foods have become an alternative to animal-derived foods. In this study, we used walnut and purple rice as the primary raw materials to produce a fermented plant drink. The process included boiling, mixing, grinding,...

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Main Authors: Hongyu Mu, Tianyi Dai, Si Huang, Kuan Wu, Mingming Wang, Chunlei Tan, Feng Zhang, Jun Sheng, Cunchao Zhao
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/13/3/400
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author Hongyu Mu
Tianyi Dai
Si Huang
Kuan Wu
Mingming Wang
Chunlei Tan
Feng Zhang
Jun Sheng
Cunchao Zhao
author_facet Hongyu Mu
Tianyi Dai
Si Huang
Kuan Wu
Mingming Wang
Chunlei Tan
Feng Zhang
Jun Sheng
Cunchao Zhao
author_sort Hongyu Mu
collection DOAJ
description In recent years, green and healthy foods have attracted much attention. Plant-based foods have become an alternative to animal-derived foods. In this study, we used walnut and purple rice as the primary raw materials to produce a fermented plant drink. The process included boiling, mixing, grinding, inoculation, fermentation, and sterilization. We then analyzed the similarities and differences between the resulting walnut and purple rice fermented plant drink and an unfermented walnut and purple rice plant drink, as well as dairy-based yoghurt, in terms of physical chemistry, flavor, and sensory characteristics. We also examined the similarities and differences between the walnut and purple rice fermented plant drink and room-temperature yoghurt. The study results revealed that the walnut and purple rice fermented plant drink exhibited greater viscosity than the walnut and purple rice unfermented plant drink and room-temperature yoghurt. Additionally, the former displayed enhanced stability and recovery ability. Notably, distinguishable differences were observed between the three samples in terms of the presence of unknown volatiles and the umami signal, as indicated by electronic nose/tongue and GC-IMS analyses. The umami flavor of the walnut and purple rice fermented plant drink surpasses that of room-temperature yoghurt, while its taste is less salty than that of the walnut and purple rice plant drink. Despite possessing a weaker aroma than dairy-based yogurt, it is more potent than the walnut and purple rice plant drink. Additionally, its relative abundance of olefins, ketones, and alcohols enhances its unique flavor profile, surpassing both other options. Based on sensory analysis, it can be deduced that walnut and purple rice fermented plant drink has the highest overall acceptance rate.
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spelling doaj.art-34eb0c09688b4258aae4c9372eeb166d2024-02-09T15:12:03ZengMDPI AGFoods2304-81582024-01-0113340010.3390/foods13030400Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant DrinkHongyu Mu0Tianyi Dai1Si Huang2Kuan Wu3Mingming Wang4Chunlei Tan5Feng Zhang6Jun Sheng7Cunchao Zhao8College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaCollege of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, ChinaIn recent years, green and healthy foods have attracted much attention. Plant-based foods have become an alternative to animal-derived foods. In this study, we used walnut and purple rice as the primary raw materials to produce a fermented plant drink. The process included boiling, mixing, grinding, inoculation, fermentation, and sterilization. We then analyzed the similarities and differences between the resulting walnut and purple rice fermented plant drink and an unfermented walnut and purple rice plant drink, as well as dairy-based yoghurt, in terms of physical chemistry, flavor, and sensory characteristics. We also examined the similarities and differences between the walnut and purple rice fermented plant drink and room-temperature yoghurt. The study results revealed that the walnut and purple rice fermented plant drink exhibited greater viscosity than the walnut and purple rice unfermented plant drink and room-temperature yoghurt. Additionally, the former displayed enhanced stability and recovery ability. Notably, distinguishable differences were observed between the three samples in terms of the presence of unknown volatiles and the umami signal, as indicated by electronic nose/tongue and GC-IMS analyses. The umami flavor of the walnut and purple rice fermented plant drink surpasses that of room-temperature yoghurt, while its taste is less salty than that of the walnut and purple rice plant drink. Despite possessing a weaker aroma than dairy-based yogurt, it is more potent than the walnut and purple rice plant drink. Additionally, its relative abundance of olefins, ketones, and alcohols enhances its unique flavor profile, surpassing both other options. Based on sensory analysis, it can be deduced that walnut and purple rice fermented plant drink has the highest overall acceptance rate.https://www.mdpi.com/2304-8158/13/3/400walnut and purple rice fermented plant drinkroom-temperature yoghurtrheologyflavorsensory
spellingShingle Hongyu Mu
Tianyi Dai
Si Huang
Kuan Wu
Mingming Wang
Chunlei Tan
Feng Zhang
Jun Sheng
Cunchao Zhao
Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
Foods
walnut and purple rice fermented plant drink
room-temperature yoghurt
rheology
flavor
sensory
title Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
title_full Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
title_fullStr Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
title_full_unstemmed Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
title_short Physical and Chemical Properties, Flavor and Organoleptic Characteristics of a Walnut and Purple Rice Fermented Plant Drink
title_sort physical and chemical properties flavor and organoleptic characteristics of a walnut and purple rice fermented plant drink
topic walnut and purple rice fermented plant drink
room-temperature yoghurt
rheology
flavor
sensory
url https://www.mdpi.com/2304-8158/13/3/400
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