INVESTIGATE THE EFFECTS OF SUPPLEMENTS ON THE PROCESSING OF YOGURT | Loan | TNU Journal of Science and Technology

INVESTIGATE THE EFFECTS OF SUPPLEMENTS ON THE PROCESSING OF YOGURT

About this article

Received: 07/11/24                Revised: 04/03/25                Published: 05/03/25

Authors

1. Huynh Thi Phuong Loan Email to author, Institute of Food and Biotechnology - Can Tho University
2. Nguyen Ngoc Diem Quynh, Institute of Food and Biotechnology - Can Tho University
3. Nguyen Huynh Ngoc Tran, Institute of Food and Biotechnology - Can Tho University
4. Nguyen Vo Ngoc Giao, Institute of Food and Biotechnology - Can Tho University
5. Bui Vo Tuong Vi, Institute of Food and Biotechnology - Can Tho University
6. Le Thanh Tuong, Institute of Food and Biotechnology - Can Tho University
7. Nguyen Thi Cam Tien, Institute of Food and Biotechnology - Can Tho University

Abstract


This research aimed to determine the type and content of oats, yeast, and carrageenan added to yogurt. Rolled or crushed oats at respective ratios (1%, 1.2%, 1.5%) were mixed with fresh milk and sweetened condensed milk, which were heated at 90 ÷ 95°C for 3-5 minutes, then cooled to 40 ÷ 45°C before the yeast was added. The commercial yeast (YC-381 or Yogurt Starter) was added a content of 0.7 ÷ 1.8%. The mixture was then fermented at 40°C until the product reached a pH value of 4.5 ÷ 4.6, then cooled down to 7 ÷ 10°C to achieve the characteristic flavor and texture of the product. The results showed that yogurt supplemented with 1.2% crushed oats, which was added to 1.5% commercial yeast YC-381 and 0.05% carrageenan, had a short fermentation time (6.08 hours). The pH reached (4.19) and acid content (0.40%). Yogurt had a high water-holding capacity (80.54%), it also characterized by soluble fiber (0.23%) and a total fiber content (0.43%), respectively, which was preferred well by the panelists. This is one improvement for fermented nutrient products.

Keywords


Fermentation; Fibre; Oats; Water-holding capacity; Yogurt

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DOI: https://doi.org/10.34238/tnu-jst.11496

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