Plant growth-promoting oligosaccharides produced from tomato waste

• Published in: Bioresource technology Vol. 81; no. 2; pp. 91 - 96
• Main Authors: Suzuki, Toshisada, Tomita-Yokotani, Kaori, Tsubura, Hirokazu, Yoshida, Shigeki, Kusakabe, Isao, Yamada, Kosumi, Miki, Yoichi, Hasegawa, Koji
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2002; Elsevier Science
• Subjects: Acid oligosaccharide; Agronomy. Soil science and plant productions; Amaranthaceae - growth & development; Biological and medical sciences; Economic plant physiology; Food industries; Food industry; Fundamental and applied biological sciences. Psychology; Growth and development; Growth regulators; Growth-promoting substance; Industrial Waste; Lycopersicon esculentum; Lycopersicon esculentum - growth & development; Lycopersicon esculentum - metabolism; Oligogalacturonic acid; Oligosaccharides - biosynthesis; Plant Growth Regulators - biosynthesis; Solanaceae; Tomato juice; Use and upgrading of agricultural and food by-products. Biotechnology; Waste; Waste Management; Oligogalacturonic acid; Tomato juice; Growth-promoting substance; Food industry; Lycopersicon esculentum; Acid oligosaccharide; Solanaceae; Waste; Vegetable juice; Oligosaccharide; Vegetable by product; Amaranthaceae; Fruit vegetable; Tomato; Biological activity; Vegetal waste; Vegetable crop; Dicotyledones; Angiospermae; Vegetable industry; Plant growth substance; Spermatophyta; Galacturonic acid
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/S0960-8524(01)00124-9

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 ° 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.