Work

Impact of Pre-treatment and Drying Temperature on Retention of Bioactives from Immature Dropped Kinnow Fruit using Ultrasonication

Year: 2025

Type: article

Abstract: Background: Agri-waste including immature dropped fruits is rich in various nutrients and bioactive compounds that can be dried and utilized for beneficial purposes. Methods: Impact of pre-treatments (citric acid, steam blanching and both together) and drying temperatures (40-80°C) on retention of bioactive compounds from immature dropped kinnow fruit (IDKF) was studied using ultrasonication. Result: Highest total phenolic (6.42 g GAE/100 g and 8.68 g TAE/100 g), total flavonoid (10.58 g QE/100 g), DPPH (390.79 mg AAE/100 g), FRAP activity (9.15 g TE/100 g and 4.65 g AAE/100 g) and minimum colour difference were detected in IDKF, pre-treated with citric acid and dried at 50°C. Crude IDKF bioactive extract, prepared from this sample showed antimicrobial activity against Gram positive bacteria. Impact of citric acid pre-treatment and drying temperatures on maximizing bioactive compounds retention was indicated by principal component analysis too. Total saponins and alkaloids were better retained in sample with no pretreatment and dried at 40°C.

Source: Asian Journal of Dairy and Food Research

DOI: 10.18805/ajdfr.dr-2332

Authors: D. Mridula, S. Arora, R.K. Vishwakarma, S. Rathod, H. Panwar

Institutions: Central Institute for Women in Agriculture, Central Institute of Post-Harvest Engineering and Technology, Indian Institute of Rice Research, Guru Angad Dev Veterinary and Animal Sciences University

Language: English

Topic: Food Drying and Modeling

Subfield: Food Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Responsible consumption and production

Open Access status: diamond

Funders: Indian Council of Agricultural Research, Guru Angad Dev Veterinary and Animal Sciences University