1Division of Environmental Sciences, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, J&K-190 025, India
2Biochemistry and Molecular Biotechnology Laboratory, Biochemistry Section, Division of Post Harvest Technology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, J&K-190 025, India
3Division of Textile Science and Apparel Designing, SNDT Women's University, Santacruz, Mumbai-400049, India
*Corresponding author: qazigazala@gmail.com
Online published on 1 September, 2016.
Pot Marigold (Calendula officinalis L.) is an annual erect herb with hispidly pubescent, corymbosely branched stem cultivated in lawns. The present investigation was carried out to study the dye yielding potential of the two varieties of Pot Marigold (Calendula officinalis L. var. Gitana Orange and Gitana Yellow) of Kashmir valley. The stability and color quality of pigments (anthocyanins and carotenoids) were assessed by quantifying the pigments and recording their color quality at 10 days interval at 0, 10, 30, 40, 50, 60, 70, 80 and 90 days after collection under ambient and refrigerated storage conditions. Results revealed that Pot marigold (var. Gitana Orange) had higher carotenoid content (288.33 mg/100g) than the Pot marigold (var. Gitana Yellow) (205.50 mg/100g). Highest pigment content was recorded during 0 days of storage in both the varieties. With increase in days of storage pigment content decreased in both plant material as well as extract under both storage conditions. Pigments in the plant material and extract stored under refrigerated conditions lasted longer than those stored under ambient conditions. Pigment degradation was more in the plant material as compared to the plant extract. Color quality of the plant species changed with increase in days of storage. From the present study it was concluded that both varieties of Pot Marigold have good levels of total carotenoids, thus petals of both varieties can be used as a raw material for extraction of yellow to orange natural dyes.
• The stability and color quality of pigments (anthocyanins and carotenoids) were assessed by quantifying the pigments and recording their color quality at 10 days interval at 0, 10, 30, 40, 50, 60, 70, 80 and 90 days
• Pot Marigold (var. Gitana Orange) had higher carotenoid content than the Pot Marigold (var. Gitana Yellow).
• With increase in days of storage pigment content decreased in both plant material as well as extract under both storage conditions.
• Pigment degradation was more in the plant material as compared to the plant extract.
Calendula officinalis L, anthocyanin, carotenoids, hunter lab
