Standardization of Flower-decoction Levels for Quality and Storage Stability of Natural Gulal from Marigold (Tagetes Erecta L.) and Rose (Rosa Spp.)
DOI:
https://doi.org/10.48165/aabr.2027.4.01.02Keywords:
Floral pigment, gulal, cost-benefit ratio, seasonal effect, rural enterpriseAbstract
The study aimed to standardize an aqueous flower-decoction and arrowroot formulation for natural gulal from marigold and rose and to determine how formulation and season of preparation affected product quality during ambient storage. Experiments were conducted during 2022–23 and 2023–24 at Bidhan Chandra Krishi Viswavidyalaya, West Bengal, using six decoction levels (40, 50, 60, 70, 80 and 90 ml per 50 g arrowroot) in a completely randomized design with four replications in summer, rainy and winter seasons. Moisture level, colour retention, pH and nine-point hedonic sensory acceptability were recorded at 0, 30, 60, 90 and 120 days. The 90 ml treatment maintained the highest absolute colour-retention score in freshly prepared marigold and rose gulal (4.06 and 4.83, respectively) and the highest sensory acceptability (8.32 and 8.43); at 120 days it still recorded sensory scores of 6.67 and 6.60. Cooler-season preparation generally improved colour and sensory performance, while moisture and pH declined progressively during storage. Treatment × season effects were significant for the principal quality attributes, and correlation analysis showed strong continuity among successive storage observations. Small-scale production generated gross benefit:cost ratios of 2.26 for marigold and 1.80 for rose. The 90 ml decoction with 50 g arrowroot, particularly under winter preparation, was the most dependable formulation for floral value addition and decentralized gulal production.
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