Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt

The concentrated blueberry candied syrup and the whole milk sterilized pure milk were used as raw material to prepare set yoghurt. The influence of addition amount for blueberry candied syrup, sugar content, starter inoculation quantity and fermentation time on the yogurt sensory quality, whey exhal...

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Main Authors: Li ZHI, Meiqi SHENG, Yurong SONG, Xu SUN, Liqiang ZHU, Chengcheng ZHU, Wenyi WEI, Ze YIN, Limei JIN, Zhijiang LI
Format: Article
Language:zho
Published: The editorial department of Science and Technology of Food Industry 2022-12-01
Series:Shipin gongye ke-ji
Subjects:
Online Access:http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022010208
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author Li ZHI
Meiqi SHENG
Yurong SONG
Xu SUN
Liqiang ZHU
Chengcheng ZHU
Wenyi WEI
Ze YIN
Limei JIN
Zhijiang LI
author_facet Li ZHI
Meiqi SHENG
Yurong SONG
Xu SUN
Liqiang ZHU
Chengcheng ZHU
Wenyi WEI
Ze YIN
Limei JIN
Zhijiang LI
author_sort Li ZHI
collection DOAJ
description The concentrated blueberry candied syrup and the whole milk sterilized pure milk were used as raw material to prepare set yoghurt. The influence of addition amount for blueberry candied syrup, sugar content, starter inoculation quantity and fermentation time on the yogurt sensory quality, whey exhalation rate and acidity were investigated. Furthermore, the response surface experiment was carried out on the basis of single factor experiment to optimize the set yoghurt preparation technological parameters. Then the texture parameters of yoghurt were compared with those of commercial yoghurt. The results showed that the optimal preparation technology of blueberry set yoghurt was as follows: The addition amount of concentrate blueberry candied syrup (concentration ratio 2 with the total sugar content 0.679 mg/mL) in the yoghurt 7%, custer sugar 4%, starter inoculation amount 0.6%, whey protein powder 2%, and fermentation control time 11 h. Under these conditions, the whey release rate was 12.43%, the acidity was 83.66°T and the sensory score reached the highest score 88.13. The blueberry set yoghurt was purple with strong frankincense and blueberry flavor. The hardness, cohesiveness and adhesiveness of this product were lower than those of commercially available fermented milk, but the water holding capacity was stronger. It was more delicate and refreshing, which tasted better than the commercially available products with thickening agent addition. In this study, the basic preparation conditions of set yoghurt of blueberry preserved fruit syrup were determined, which provided useful reference for improving the comprehensive utilization value of blueberry preserved fruit syrup and developing new fruity set yoghurt.
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spelling doaj.art-1995c526dc3d44d0b517ba45ebf15b992022-12-22T03:43:47ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062022-12-01432318319110.13386/j.issn1002-0306.20220102082022010208-23Optimization of Preparation Technology of Blueberry Candied Syrup-based Set YoghurtLi ZHI0Meiqi SHENG1Yurong SONG2Xu SUN3Liqiang ZHU4Chengcheng ZHU5Wenyi WEI6Ze YIN7Limei JIN8Zhijiang LI9College of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaCollege of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, ChinaThe concentrated blueberry candied syrup and the whole milk sterilized pure milk were used as raw material to prepare set yoghurt. The influence of addition amount for blueberry candied syrup, sugar content, starter inoculation quantity and fermentation time on the yogurt sensory quality, whey exhalation rate and acidity were investigated. Furthermore, the response surface experiment was carried out on the basis of single factor experiment to optimize the set yoghurt preparation technological parameters. Then the texture parameters of yoghurt were compared with those of commercial yoghurt. The results showed that the optimal preparation technology of blueberry set yoghurt was as follows: The addition amount of concentrate blueberry candied syrup (concentration ratio 2 with the total sugar content 0.679 mg/mL) in the yoghurt 7%, custer sugar 4%, starter inoculation amount 0.6%, whey protein powder 2%, and fermentation control time 11 h. Under these conditions, the whey release rate was 12.43%, the acidity was 83.66°T and the sensory score reached the highest score 88.13. The blueberry set yoghurt was purple with strong frankincense and blueberry flavor. The hardness, cohesiveness and adhesiveness of this product were lower than those of commercially available fermented milk, but the water holding capacity was stronger. It was more delicate and refreshing, which tasted better than the commercially available products with thickening agent addition. In this study, the basic preparation conditions of set yoghurt of blueberry preserved fruit syrup were determined, which provided useful reference for improving the comprehensive utilization value of blueberry preserved fruit syrup and developing new fruity set yoghurt.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022010208blueberryset yoghurtsyrupresponse surfacetexture
spellingShingle Li ZHI
Meiqi SHENG
Yurong SONG
Xu SUN
Liqiang ZHU
Chengcheng ZHU
Wenyi WEI
Ze YIN
Limei JIN
Zhijiang LI
Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
Shipin gongye ke-ji
blueberry
set yoghurt
syrup
response surface
texture
title Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
title_full Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
title_fullStr Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
title_full_unstemmed Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
title_short Optimization of Preparation Technology of Blueberry Candied Syrup-based Set Yoghurt
title_sort optimization of preparation technology of blueberry candied syrup based set yoghurt
topic blueberry
set yoghurt
syrup
response surface
texture
url http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022010208
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