Abstract
This study aimed to prepare a stirred type of fat-free yogurt from enzymatically hydrolyzed potato powder (EHPP) and skimmed milk powder (SMP) without changing its quality and consumer acceptance. The yogurt formulations prepared contained different amount of EHPP 0, 10, 25 and 50% and were stored for 28 days at 4 °C and observed that with increasing substitution ratio, acid production was increased while the viability of lactic acid bacteria was decreased after 28 days of storage at 4 °C. The antioxidant activities (2-Diphenyl-1-picryl-hydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power (FRAP) of the yogurt were increased with increasing EHPP over the storage period. The yogurt formulations having 25 to 50% EHPP has the highest DPPH free radical scavenging activity and FRAP values. Water holding capacity (WHC) was decreased over the storage period with 25% EHPP. The hardness, adhesiveness and gumminess were decreased while no significant change was found in springiness with EHPP addition over the storage period. The rheological analysis showed an elastic behavior of yogurt gels with EHPP supplementation. The sensory results of yogurt containing 25% EHPP have the highest values of taste and acceptance. Yogurt in combination with EHPP and SMP has the higher levels of WHC than non-supplemented yogurt and better stability was recorded during storage.
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Acknowledgements
All the authors are thankful to the Nature Science Foundation of Hubei Province for providing financial assistance for this research work (Grant No 2018CFB269). We are also grateful to the College of Food Science and Technology Huazhong Agricultural University Wuhan Hubie China for providing technical assistance in the formulation and quality estimation of the product.
Funding
This work was financially supported by the Nature Science Foundation of Hubei Province China (Grant no 2018CFB269).
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IA conceived the idea, carried out the experiments and wrote the manuscript; XH supervised the research work review and edited the manuscript, ZX, FA NK, RMA and AA reviewed and edited the manuscript, NW, AM, AI, H M and Y L review the manuscript.
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Ahmad, I., **ong, Z., Hanguo, X. et al. Combination of enzymatically hydrolyzed potato powder with skimmed milk powder on the quality improvements of yogurt during refrigeration storage. J Food Sci Technol 60, 2031–2041 (2023). https://doi.org/10.1007/s13197-023-05737-9
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DOI: https://doi.org/10.1007/s13197-023-05737-9