Influences of LED light quality to rice seedlings green tea grown in a semi-closed system

Abstract

To assess the effects of light quality on 6 variety rice seedlings of Oryza sativa Linn. for develop the green tea product. Investigate the %germination for consistency of rice seedling per area. Using 14 days after germination of 3 white seed cultivars RD10, Thai Pathumthani fragrant, Khao Dawk Mali 105 and 3 red seed cultivars, RD69, Black Jasmin rice and Black Gluten Rice. The methods of green tea processing were studied in order to find out the most suitable way to produce green tea product under light quality control. The results showed that green tea products from all 6 rice cultivars were almost similar in term of color and size. Khao Dawk Mali 105 was greater aroma taste and β-glucan (2.7 g./100g.) under red light condition content than others. The seedling height yield, %dry weight and vitamin C content were varies in stain and have a little effect from light quality. Chlorophyll a and chlorophyll b content were show higher in red seedling green tea under white light condition with the highest value of 1.75+0.03 mg.g^-1 in Black Gluten Rice and 0.99+0.2 mg.g^-1 in Thai Pathumthani fragrant rice for chlorophyll b. Protein analysis of those of 6 rice cultivars showed that the highest value in white rice seed under red light condition with the value of 110.08+14.6 mg.L^-1. The red light was shown more effect to red seedling cultivars than white seedling cultivars.  In conclusion the influences of LED light quality to rice seedlings green tea grown in a semiclosed system have seem to be clear in chlorophyll a and chlorophyll b content in red rice seedling under white light condition.

Keywords: LED Light Quality, Rice seedling, Green tea