Elik Murni Ningtias Ningsih, Sudiyono, Frida Dwi Anggraeni
Natural Plant growth regulator (PGR) of auxin as a plant growth promoted was found in coconut water waste. The addition of glucose and tryptophan improved the quality of the substrate in the fermentation of coconut water waste. The addition of tryptophan glucose could reduce acidity / pH and produced acetic acid. Acetic acid was the source of plant growth regulator of auxin was in the form of IAA compounds (Indole acetic acid). The process of Auxin separation (IAA) was through extraction and isolation. This study was aimed to determine the content of plant growth regulator of auxin in fermented coconut water waste with the addition of glucose and tryptophan. This study used a completely randomized design with a single factor treatment. The treatments were consisted of P0 = coconut water waste, P1 = coconut water waste and 1.5 g glucose, P2 = coconut water waste and 1.5 g glucose, P3 = coconut water waste and tryptophan 8 mg P4 = coconut water waste and tryptophan 10 mg. The results of glucose and tryptophan were affected in pH and acetic acid after fermentation. The addition of tryptophan was affected the amount of plant growth regulator of auxin in fermented coconut water waste. The best treatment that obtaining IAA was P3 and P4. © Published under licence by IOP Publishing Ltd.
Widyagama University (UWG), Malang, 65145, Indonesia
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