Volume 45, Issue 11 e15884
ORIGINAL ARTICLE

Nutritional composition of non-dairy yogurt from sprouted tigernut tubers

Oladeinde O. Ogundipe

Oladeinde O. Ogundipe

Department of Food Technology, Yaba College of Technology, Lagos, Nigeria

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Beatrice Mofoluwaso Fasogbon

Corresponding Author

Beatrice Mofoluwaso Fasogbon

Department of Food Technology, Federal Institute of Industrial Research, Lagos, Nigeria

Department of Biotechnology and Food Technology, University of Johannesburg, Johannesburg, South Africa

Correspondence

Beatrice Mofoluwaso Fasogbon, Department of Food Technology, Federal Institute of Industrial Research, Oshodi, Lagos, Nigeria.

Email: [email protected]

Contribution: Data curation, Methodology, Writing - original draft, Writing - review & editing

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Flora Olubunmi Ogundipe

Flora Olubunmi Ogundipe

Department of Biological Sciences, Yaba College of Technology, Yaba, Lagos, Nigeria

Contribution: Conceptualization, Methodology, Supervision

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Omolade Oredope

Omolade Oredope

Department of Food Technology, Yaba College of Technology, Lagos, Nigeria

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Rufina Udoka Amaezenanbu

Rufina Udoka Amaezenanbu

Department of Food Technology, Yaba College of Technology, Lagos, Nigeria

Contribution: Data curation, ​Investigation

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First published: 19 August 2021
Citations: 21

Abstract

Tigernut is a good non-dairy substitute for the production of yogurt especially for people who suffer from lactose intolerance, considering the enormous health benefits offered by its probiotic effects. Sprouting treatment was applied to tigernut tubers before processing to yogurt, and mixed culture of Lactobacillus bulgaricus and Streptococcus thermophilus during the production. Effect of sprouting (0 hr, 24 hr, 48 hr, and 72 hr) was investigated on the nutritional composition (proximate, anti-nutritional factors, and amino acid), sensory, and storage attributes (Titratable acidity [TTA], pH, °Brix) of the tigernut yogurts. Increased sprouting time significantly increased the protein, ash, crude fiber and energy value, improved amino acids, and sensory attributes, but decreased fat and anti-nutritional content of the yogurt samples. On storage, tigernut yogurt increased in TTA and reduced in pH (from 4.45 to 3.65), a level within the range that the live probiotics could survive. An acceptable non-dairy yogurt can be produced from sprouted tigernuts.

Novel impact statement

  • Sprouted tigernut tubers can produce an acceptable non-dairy yogurt.
  • Sprouting influenced the nutritional and amino acid content, but reduced anti-nutrients of the tigernut yogurt.
  • Sprouted tigernut could represent a functional food capable of improving health.

CONFLICTS OF INTEREST

The authors have declared no conflicts of interest for this article.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.