Effects of sprouting of soybean on the anti-nutritional, nutritional, textural and sensory quality of tofu
2022
Zinia, Sumaiya Afrin | Nupur, Asmaul Husna | Karmoker, Poly | Hossain, Abir | Jubayer, Md Fahad | Akhter, Delara | Mazumder, Md Anisur Rahman
Soybean (Glycine max) is a superior plant food known as the miracle golden bean due to its treasure trove of inexpensive and superior protein to high-priced meat protein. Tofu is typically thought of as a salt or acid-coagulated water-based gel containing soy lipids and proteins trapped within its gel networks. Sprouted tofu is easier to digest and contains more nutrients than regular tofu. The purpose of this study was to evaluate the nutritional and sensory quality of tofu. The study was concerned with the preparation of tofu from non-germinated and germinated soybeans of 0 (T₀), 2 (T₁), 4 (T₂) and 6 (T₃) days. The length of the radicle was 0.8, 1.5, and 2 inches for T₁, T₂, and T₃, respectively. Lipoxygenase activity, phytate inhibitory activity, urease activity, trypsin inhibitory activity, protein solubility, nutritional, and sensory quality of prepared tofu were all assessed. Longer sprouting times reduced phytate, urease, trypsin, and lipoxygenase activity while increasing protein solubility. Tofu prepared from T₃ showed significantly better physicochemical properties than others. Protein, ash, and fat contents were significantly higher in T₃. The level of nutrient content for tofu samples was in the rank of T₃>T₂>T₁>T₀. The L*, a* and b* values were followed the same ranked as nutrient content (T₃>T₂>T₁>T₀). Sensory characteristics indicated that T₃ was significantly more acceptable to the panelist. This study concludes that tofu made from 6 day sprouted soybeans with a height of 2 inches can be a good source of nutrition for consumers.
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