1. Amorn Boonsombut 1 and Ratchada Tangwongchai 2 Department of Food Technology, Faculty of Technology, KhonKaen University, KhonKaen 40002, Thailand E-mail:ratchada@kku.ac.th, a.b.boonsombut@gmail.com Amorn Boonsombut 1 and Ratchada Tangwongchai 2 Department of Food Technology, Faculty of Technology, KhonKaen University, KhonKaen 40002, Thailand E-mail:ratchada@kku.ac.th, a.b.boonsombut@gmail.com The composition in CS depends on many factors i.e., variety, growing location, harvesting stage. Corn silk (CS) or stigma maydis refers to the female flowers (Zea mays). CS has health benefit and has been traditionally used as the eastern local wisdom in Chinese medicine. Several researches reported constituents of CS such as proteins, lipid, ash, carbohydrate, total dietary fiber, minerals, flavonoids, tannins, phlobatannins, cardiac glycoside and steroids. However, CS is a waste from fresh consumption and processing. There are high possible prospect to create value-added product from such a waste from corn. The composition in CS depends on many factors i.e., variety, growing location, harvesting stage. This research was aimed to Determination of physical and chemical attributes of baby-corn and purple waxy-corn silks 2. Chemical properties of baby-corn and purple waxy-corn silks ObjectivesObjectives Proximate analysisBC-CSPW-CS Moisture (%wet basis)88.67±0.22 a 77.13±0.07 b Ash (% dry basis) 2.53±0.03 a 1.93±0.09 b Fat (% dry basis) 1.98±0.07 a 0.53±0.08 b Protein (% dry basis) 8.98±0.08 a 7.53±0.01 b Fiber (% dry basis)12.98±0.28 ns 14.06±0.37 ns Carbohydrate (% dry basis)69.68±0.33 ns 70.22±0.31 ns Corn silk is a source of bioactive compounds with strong antioxidant activity. Bioactives in corn silk are complex, not a single compound of phenolics. The antioxidant activity of CS could be free radical scavenging and reducing power, indicating various bioactives in CS. The CS of both coloured and baby-corn promised a high potential utilization as functional food. It is not only a waste utilisation transforming to value- added products. Variety Antioxidant activity DPPH (mgTrolox eq /100g DM) FRAP (mmolFe 2 SO 4eq /100gDM) BC-CS 25.51±0.05 b 53.54±0.08 b PW-CS 30.72±0.01 a 101.83±0.11 a Physical properties Variety BCPC %Yield (fw) Husk (%)60.33 a 32.6 b Silks (%)15.16 a 3.66 b Ear (%)24.51 b 63.74 a Colour parameters Lightness (L*)61.64 a 19.33 b Redness (a*)0.1 b 10.03 a Yellowness (b*)26.12 a 3.24 b Hue angle ( o H)86.78 a 17.89 b Chroma (C*)26.12 a 10.54 b Table 2 Proximate analysis of baby-corn and purple waxy-corn silks Table 1 The physical compositions of baby-corn silks and purple waxy-corn silks Table 3 Antioxidant activity of baby-corn and purple waxy-corn silks Fig. 1 Bioactive compounds of baby-corn and purple waxy-corn silks a-b The different letters within the same row state significant differences of the mean values (p  0.05) a-b The different letters within the same column state significant differences of the mean values (p  0.05) Rahman, N.A. and Rosli, W.I.W. (2014). Nutritional compositions and antioxidant capacity of the silk obtained from imam-ture and mature corn. Journal of King Saud University - Science. 26: 119-127. Solihah, M.A., Rosli, W.I., and Rahman, N.A. (2012). Phytochemicals screening and total Phenolic content of Malaysian Zea mays hair extracts. International Food Research Journal. 19(4): 1533-1538. Sarepoua, E. Tangwongchai, R. Suriharn, B. and Lertrat, K. (2013).Relationships between phytochemicals and antioxidant activity in corn silk. International Food Research Journal. 20(5): 2073-2079. 1. Physical compositions of baby-corn and purple waxy-corn silks baby-corn silkspurple waxy-corn silks