Changes in physical properties of sweet potato due to effects of thermal pre-treatments for puree production

Dyna

Sonia Gallego-Castillo¹  Alfredo Adolfo Ayala-Aponte² 

[1] International Center for Tropical Agriculture;Universidad del Valle;

关键词: blanching;    color;    freezing;    sweet potato;    texture;   

DOI  :  10.15446/dyna.v85n207.72876

来源: DOAJ

【 摘 要 】

In response to increasing consumer demand for high-quality, easy-to-prepare foods, it is necessary to develop innovative ways to use roots and tubers, such as sweet potatoes, in processed foods. Thus, two thermal processes were evaluated, freezing-cooking (F+C) and blanching-freezing-cooking (B+F+C) on the physical properties of the orange-fleshed sweet potato (OFSP) cultivar, which has a high content of β-carotene, in terms of drip loss (Δm), volume variation (ΔV), color, and texture. Cylindrical samples of OFSP were used. Blanched and unblanched samples were stored by freezing, at -18 °C for 2 months, and subsequently cooked at 95 °C. The blanching process was carried out at 95 °C for 2 min. The results showed that, when blanching was used as a pre-treatment for freezing-cooking, a product with fewer physical changes, with a lighter and more intense color (chroma), and with a lower loss of elasticity (Ed) and firmness (F) was obtained.

【 授权许可】

Unknown