title: Effects of soybean curd wastewater on the growth and hydrocarbon production of Botryococcus braunii strain BOT-22.
abstract: A laboratory study was conducted to evaluate the possibility of using wastewater from a soybean curd manufacturing plant as a growth promoter of Botryococcus braunii strain BOT-22. Soybean curd wastewater (SCW) were added to AF-6 medium to set the final concentration to 0% (control), 1%, 2%, 5%, and 10% (v/v). The growth and hydrocarbon production observed in the cultures with 1% and 2% SCW were significantly higher than that observed in the control. It was postulated that proteins and/or reducing sugars in SCW could enhance the growth. A major finding was a shift in the chemical composition of hydrocarbons from C(34)H(58) to C(32)H(54) in association with increased concentrations of SCW. Considering the inorganic ions in SCW, it was presumed that a mixture of nitrate, 1-2% SCW, and secondarily treated SCW can be applied for mass cultivation of Botryococcus.
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan. natsuki.yonezawa@gmail.com
authors.forename: Natsuki
authors.initials: N
authors.lastname: Yonezawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Matsuura
authors.forename: Makoto
authors.initials: M
authors.lastname: Shiho
authors.forename: Kunimitsu
authors.initials: K
authors.lastname: Kaya
authors.forename: Makoto M
authors.initials: MM
authors.lastname: Watanabe
mesh_terms: D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000032:analysis; D000460:Chlorophyta / Q000254:growth & development* / Q000378:metabolism*; D006838:Hydrocarbons / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D045730:Soy Foods; D014865:Waste Disposal, Fluid
chemical_list: D002241:Carbohydrates; D006838:Hydrocarbons; D011506:Proteins