Ultrasonic-assisted betalain extraction from red dragon fruit pulp (Hylocereus polyrhizus) using response surface methodology.

Ultrasonic-assisted extraction (UAE) was employed for the maximum recovery of betalain pigment from red dragon fruit pulp using response surface variables as temperature (25-65 °C), extraction time (5-25 min), number of extractions (1-5), and solid/mass ratio (1:5-1:15 v/v). UAE at 25 kHz increased the betacyanin yield by 32 % i.e. 15.18-20.03 mg/100 ml and betaxanthin by 30 % i.e. 6.39-8.31 mg/100 ml in fresh dragon fruit pulp respectively. The central composite rotatable design was found to be best fitted with data having a higher R2 (91 and 97 %), lower value of standard error and scattered plot. Maximum recovery of betalain pigment from pulp was obtained at 55 °C, 20 min, four extractions and 1:12.5 v/v because at higher temperature breakdown of compact tissues of fruit lead to the release of pigments and further increase in temperature (55 °C) can cause degradation of pigment. This study provides sustainable data for process design and industrial scale-up operations.

• Publication year

  2025

• Venue

  Food Chemistry

• Publication date

  2025-12-01

• Fields of study

  Medicine, Environmental Science

• Identifiers
  DOI 10.1016/j.foodchem.2025.147658PMID 41453279
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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