บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

The relationship between structure and function of surfactants used for rehydration of cut astilbe, bouvardia and roses.

Pak, C. and Doorn, W. G. van

Acta Horticulturae Year: 1991 Issue: No. 298 Pages: 171-176 Ref: 2 ref.

1991

บทคัดย่อ

The relationship between structure and function of surfactants used for rehydration of cut astilbe, bouvardia and roses.

Flowering stems of roses (cv. Sonia), bouvardia (cv. Artemis Jowhite) and astilbe (cv. Cattleya) were cut and placed in water within 1 min. Within 4 h the stems were recut and the flowers placed individually in water (controls) or in surfactant solutions of Agral-LN (nonylphenolpolyglycol) or MHP535AZ for 24 h at 20 deg C, 60% RH and a photosynthetic photon flux of 15 micro mol m-2 s-1. The stems were than held dry for 24 h under the same conditions and subsequently placed individually in water. The chemical oxygen demand (COD) and the biological oxygen demand (BOD) of the surfactant solutions were measured. Water uptake and the weight of flowering stems on the first day in water after 24 h dry storage were higher in stems which had been placed in surfactant solutions than in control stems; both surfactant solutions were equally effective. The COD/BOD ratio was lower for Agral-LN (with a benzene ring) than for MHP535AZ (without a benzene ring), indicating the higher biodegradability of MHP535AZ.