The heat susceptibility of starch granule structure has been considering as significant limitation of germinated black rice (GBR) using in food processing industry. Therefore, this study aimed to improve the physicochemical and antioxidation property as well as its effect on the probiotics of GBR by heat moisture treatment (HMT). Black rice germinated at 37.5 °C for 12, 24, and 36 h were studied. Ultrastructural image of each sample was visualized through scanning electron microscope. The results illustrated 24 h-GBR retain its former shape with rough surface. Subsequently, 24 h-GBR was structurally modified by HMT with moisture levels of 20% and 25% for 1 and 2 h. The results showed that pasting properties of HMT-treated GBR were improved. This was particularly on, GBR using HMT condition of 25% moisture for 2 h decrease in breakdown viscosity was shown. Moreover, phenolic content of HMT-treated GBR was higher than those of GBR. Besides, the number of the TOKAI 13 was increased in GBR and HMT-treated GBR with counts of 10.08 ± 0.83 Log CFU/ml and 9.31 ± 0.33 Log CFU/ml, respectively, with significant increases in antioxidant property. Therefore, the HMT-GBR could be utilized as an alternative functional ingredient in food processing products.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479042 | PMC |
| http://dx.doi.org/10.1007/s13197-020-04951-z | DOI Listing |
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