บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Availabilities of red light-emitting diodes as light source for low light irradiation and mineral nutrient supply using nutrient gel during low temperature storage of postharvest chervil (Anthriscus cerefolium L.).

Fujiwara, K.; Takaku, K.; Iimoto, M.;

Environment Control in Biology Year: 1999 Vol: 37 Issue: 2 Pages: 137-141 Ref: 7 ref.

1999

บทคัดย่อ

Availabilities of red light-emitting diodes as light source for low light irradiation and mineral nutrient supply using nutrient gel during low temperature storage of postharvest chervil (Anthriscus cerefolium L.).

A. cerefolium was harvested and packed in transparent polystyrene packages in a commercial operation. Packages were stored at 3 deg C for 27 days under different light conditions: dark (D); low light irradiation (LLI of 1 micro mol m-2 s-1) using red light-emitting diodes (R); or LLI using a white fluorescent lamp (W). Cut stem ends were placed in agar gel which contained nutrients (C) or was nutrient free (N). The colour difference ( DELTA E* ab) values, measured through the upper cover of the package, of leaves in RC and WC were significantly lower than in the other treatments on the last day of storage. The DELTA E* ab values in RC and WC were <3 for the first 21 and 24 days of storage, respectively. The DELTA E* ab values in DN, DC, RN and WN were >3 after day 9, day 8, day 16 and day 16 of storage, respectively. A 5-rank subjective visual quality score of A. cerefolium on day 27 indicated that RC maintained the highest quality, followed by WC, DN and DC, and these treatments had a higher qu

ality than RN and WN. Red light-emitting diodes were more effective than the white fluorescent lamp as a source of LLI, and the presence of mineral nutrients in the gel was essential to preserve the visual quality of A. cerefolium during low temperature storage.