title: Plant growth-promoting oligosaccharides produced from tomato waste.
abstract: Tomato juice waste was hydrolyzed with acid. Tomato juice waste (500 g; wet weight) was heated with 0.5 N HCl (2.5 l) at 70 degrees C for 4 h. After neutralization, the growth-promoting extracts (300 g; dry weight) in the plants were produced from the tomato waste. The acid extract significantly promoted the growth of cockscomb (Celosia argentea L.) and tomato (Lycopersicon esculentum L.) seedlings. We have recognized potent plant growth-promoting substances in the acid extract from tomato waste. The most effective components in the active fraction were almost all oligogalacturonic acids (DP 6-12). This paper is the first report that plant growth-promoting oligosaccharides can be directly produced from tomato juice waste. It is possible that the substances from the tomato waste can become useful plant growth regulators in the agriculture field in the future.
authors.affiliation: University of Tsukuba, Ibaraki, Japan.
authors.forename: Toshisada
authors.initials: T
authors.lastname: Suzuki
authors.forename: Kaori
authors.initials: K
authors.lastname: Tomita-Yokotani
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Tsubura
authors.forename: Shigeki
authors.initials: S
authors.lastname: Yoshida
authors.forename: Isao
authors.initials: I
authors.lastname: Kusakabe
authors.forename: Kosumi
authors.initials: K
authors.lastname: Yamada
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Miki
authors.forename: Koji
authors.initials: K
authors.lastname: Hasegawa
mesh_terms: D027703:Amaranthaceae / Q000254:growth & development; D007220:Industrial Waste; D018551:Solanum lycopersicum / Q000254:growth & development / Q000378:metabolism*; D009844:Oligosaccharides / Q000096:biosynthesis*; D010937:Plant Growth Regulators / Q000096:biosynthesis*; D018505:Waste Management
chemical_list: D007220:Industrial Waste; D009844:Oligosaccharides; D010937:Plant Growth Regulators