Effect of Tithonia diversifolia extract on the biodegradability of the bioplastics in plantation soil

• Published in: Menara perkebunan Vol. 86; no. 2; pp. 56 - 61
• Main Authors: Isroi, Nendyo A Wibowo, Evi Savitri, Deden D Eris, Agus Purwantara
• Format: Journal Article
• Language: English
• Published: indonesian research institute for biotechnology and bioindustry 01.10.2018
• Subjects: biodegrada-bility; bioplastic; plantation soil; tithonia diversifolia
• ISSN: 0125-9318; 1858-3768
• DOI: 10.22302/iribb.jur.mp.293

Effect of Tithonia diversifoliaextract on biodegradability of the bioplastic was evaluated using plantation soil as natural inoculum. The bioplastic was a composite of cellulose from cacao pod husk, starch and enriched by tithoniaextract. Biodegradation test wasereconducted in the glass jar for 60 days. The carbon dioxide generated from the biodegradation test titrated by 0.1 N sodium hydroxide solutions. The carbon dioxide was measured with 0.1 N HCl and using phenolphthalein followed by methyl orange as indicator. Carbon dioxide was detected in the bioplastic samples but not detected in the conventional plastic sample during the test. Biodegradation of the bioplastic enriched by tithoniaextract was higher than that of the bioplastic without tithoniaextract. Biodegra-dation rate of the bioplastic samples in plantation soil were 0.068 mg CO2/day and 0.178 mg CO2/day for the bioplastic without and with tithoniaextract, respectively. Biodegradation of the bioplastic samples for 45 days were 12.44% and 28.07% for the bioplastic without and with tithoniaextract, respectively. Complete biodegradation of the bioplastic predicted in 244 days and 200 days for the bioplastic without and with tithoniaextract, respectively.