Journal
JOURNAL OF FOOD AND DRUG ANALYSIS
Volume 26, Issue 1, Pages 244-251Publisher
FOOD & DRUG ADMINSTRATION
DOI: 10.1016/j.jfda.2017.03.005
Keywords
banana starch; corona electrical discharge; plasma; resistant starch; starch property
Categories
Funding
- Council of Agriculture, the Republic of China [105AS-16.3.1-CI-C5, 105AS-16.3.1-CI-C6]
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Corona electrical discharge (CED) belongs to an atmospheric pressure cold plasma. In this study, raw banana starch (indigenous to Taiwan), which contained resistant starch and amylose at a level of 58.4 g/100 g and 14.5 g/100 g, respectively, was treated by CED at 30 kV/cm, 40 kV/cm, and 50 kV/cm for 3 minutes. After the CED treatment, starch analyses showed that there were no apparent changes in the resistant starch and amylose contents. Only surface and nonpenetrative damage caused by plasma etching at different voltage strengths were observed on the starch granules. The CED treatments reduced the total area of diffraction peak, gelatinization enthalpy (by -21% to -38%), and different pasting behaviors including peak viscosity, breakdown, final viscosity, and setback. The CED treatments were capable of increasing relative crystallinity and gelatinization temperature. This study revealed the potential of CED plasma technology as a tool to modify the characteristics of banana starch. Copyright (C) 2017, Food and Drug Administration, Taiwan. Published by Elsevier Taiwan LLC.
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