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March 1, 2026International Journal of Economic PlantsOpen Access

Preparation of Roselle (Hibiscus sabdariffa L.) Powder by Different Drying Methods

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Authors

HAHalesh AngadiCentral Agricultural UniversityMKManjula KaradiguddiCentral Agricultural UniversityKGKirankumar GorabalUniversity of Horticultural Sciences Bagalkote

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Overview

Experiment demonstrates the impact of drying methods on the quality of roselle powder, indicating optimal treatment options.

Key Points

  • The aim is to evaluate how different pre-treatments and drying methods affect the quality of roselle powder.
  • Conducted a factorial completely randomized design experiment.
  • Utilized three pre-treatments: without blanching, one-minute steam blanching, and two-minute steam blanching.
  • Employed four drying methods: sun drying, shade drying, solar drying, and cabinet drying at 60°C.
  • Analyzed physical and chemical parameters of the roselle powder samples.
  • The optimal powder with steam blanching for one minute and cabinet drying had a recovery of 10.50%.
  • Moisture content was measured at 10.14% with a water activity of 0.29.
  • High anthocyanin content was recorded at 243.15 mg 100 g-1.
  • Total phenols were quantified at 321.50 mg GAE 100 g-1.
  • Antioxidant activity reached 71.39%, indicating improved nutritional quality.

Cite This Study

Angadi et al. (2026) studied this question.

synapsesocial.com/papers/69a3d79dec16d51705d2dd4ahttps://doi.org/10.23910/2/2026.6788
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Influence of drying temperature on the retention of bioactive compounds and antioxidant potential of roselle (Hibiscus sabdariffa L.): An RSM-based optimization study2026
  2. 2Vacuum drying of roselle ( <i>Hibiscus subdariffa</i> Linn.) calyces for retention of bioactive compounds and antioxidant activity of functional beverage blended with grapes and watermelon2025
  3. 3Color and antioxidant stability of foam-mat and conventional-dried red and purple roselle ( <i>Hibiscus sabdariffa</i> L.) calyces’ powder at different temperatures2026
  4. 4Study of sensory evaluation, and cost evaluation of products made from roselle calyces2024
  5. 5Phytochemical Composition and Bioactivities of Roselle (Hibiscus sabdariffa L.) Extracts Obtained by Infusion, Ethanolic Maceration, and Maltodextrin-Assisted Drying2026