บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Non-destructive estimation of the gas metabolism for recording of the course of senescence for medicinal and culinary plants after harvesting.

Bottcher, H.; Gunther, I.; Warnstorff, K.;

Deutsche Gesellschaft fur Qualitatsforschung (Pflanzliche Nahrungsmittel) DGQ e.V. XXXIV. Vortragstagung, Zerstorungsfreie Qualitatsanalyse, Freising-Weihenstephan, Germany, 22-23 Marz 1999. Year: 1999 Pages: 107-118 Ref: 2 ref.

1999

บทคัดย่อ

Non-destructive estimation of the gas metabolism for recording of the course of senescence for medicinal and culinary plants after harvesting.

An instrument for the continuous recording of respiration of herb samples and the simultaneous estimation of changes in essential ingredients by balance sheet calculations during a postharvest period is presented. Medicinal herbs are characterized by high respiration rates (on average at 10 deg C, peppermint (Mentha x piperita L.) 552 W/day, Saint John's-wort (Hype- ricum perforatum L.) 670 W/d, Chamomile flowers (Chamomilla recutita (L.) Rauschert) 999 W/d, and valerian roots (Valeriana officinalis L.) 268 W/d). These comparatively high levels were maintained throughout the postharvest period of 80 h respiration over 21 days for valerian. Calculations of balance sheets for the quantities of essential ingredients showed partial increases for hypericine and flavonoids in St-John's-wort and for valerene acid in valerian roots, and decreases for total valerene and acetoxy-valerene acid.