Comparison of Chemical Compositions, Nutritional Values, Antioxidant and Tyrosinase Inhibition Activities in Corn Silk of Three Different Corn Varieties

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Noppadol Hongsuwan Khaetthareeya Sutthanut

Abstract

Corn silk rubble left over from the privatization process in the industry with a lot of corn. The study was conducted to compare three different varieties of corn silk; Sweet L. var. corn ( Zea mays L. var. saccharata), Sweet corn (Zea mays saccharata), Waxy corn (Zea mays ceratina) in chemical compositions, nutritional values, antioxidant and tyrosinase inhibition activity. The three varieties of crude corn silk extracts chemical elements were tested by Thin layer chromatography assay. The results shown that 50% ethanolic extract of corn silk found phenolic compound and flavonoids. Proximate analysis revealed that sweet corn silk with moisture content, the highest percentage, 10.26 ± 0.66 from waxy corn silk with ash, the highest percentage, 6.43 ± 1.77 from sweet corn silk has a fat content, the highest percentage, 0.29 ± 0.17 from waxy corn silk fiber the highest percentage, 14.13 ± 0.44 from sweet corn silk protein, the highest percentage, 21.19 ± 0.61 and from sweet L. var. corn silk to the amount of carbohydrates, the highest percentage, 61.59 ± 1.06 For antioxidant activity with DPPH radical scavenging activity shown that the extract from sweet corn silk with IC50 value was 5991.98 ± 60.61 µg/ml.  The tyrosine inhibition activity of corn silk, which can inhibit the enzyme tyrosinase, the best extracted from waxy corn silk with IC50 values were 3082.28 ± 347.98 µg/ml. The results of this study were to analyze the nutritional value and biological activity, which can be used as a basis for the development of health care products and to develop into a cosmetic product that can be used for skin whitening.

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Original Articles
Author Biographies

Noppadol Hongsuwan, Thai Traditional Medicine Faculty of Natural Resources Rajamangala University of Technology Isan Sakon Nakhon Campus, Sakon Nakhon 47000, Thailand

N/A

Khaetthareeya Sutthanut, Department of Pharmaceutical chemistry Faculty of Pharmacy Khonkaen University, Khon Kaen 40002, Thailand

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