title: Production of bioethanol and biodiesel using instant noodle waste.
abstract: Instant noodle manufacturing waste was used as feedstock to convert it into two products, bioethanol and biodiesel. The raw material was pretreated to separate it into two potential feedstocks, starch residues and palm oil, for conversion to bioethanol and biodiesel, respectively. For the production of bioethanol, starch residues were converted into glucose by α-amylase and glucoamylase. To investigate the saccharification process of the pretreated starch residues, the optimal pretreatment conditions were determined. The bioethanol conversion reached 98.5 % of the theoretical maximum by Saccharomyces cerevisiae K35 fermentation after saccharification under optimized pretreatment conditions. Moreover, palm oil, isolated from the instant noodle waste, was converted into valuable biodiesel by use of immobilized lipase (Novozym 435). The effects of four categories of alcohol, oil-to-methanol ratio, reaction time, lipase concentration and water content on the conversion process were investigated. The maximum biodiesel conversion was 95.4 %.
authors: Department of Chemical and Biological Engineering, Korea University, 5 Ga, Anam-dong, Sungbuk-Gu, Seoul, 136-701, Korea.
authors: Xiaoguang
authors: X
authors: Yang
authors: Ja Hyun
authors: JH
authors: Lee
authors: Hah Young
authors: HY
authors: Yoo
authors: Hyun Yong
authors: HY
authors: Shin
authors: Laxmi Prasad
authors: LP
authors: Thapa
authors: Chulhwan
authors: C
authors: Park
authors: Seung Wook
authors: SW
authors: Kim
mesh_terms: D056804:Biofuels; D000431:Ethanol; D019649:Food Industry; D007220:Industrial Waste; D012441:Saccharomyces cerevisiae / Q000254:growth & development*; D014865:Waste Disposal, Fluid; D000516:alpha-Amylases
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D000431:Ethanol; D000516:alpha-Amylases