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Evaluate the effect of β-cyclodextrin on the sensory and physicochemical properties of bitter gourd extract during
Cam Thi Hong Tran1, Hui-Min David Wang2, Le Thi Hong Anh3
1Department of Seafood Science, National Kaohsiung University of Science and Technology, No. 142, Haijhuan Rd, Nanzih District, Kaohsiung 81157, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, No. 142, Haijhuan Rd, Nanzih District, Kaohsiung 81157, Taiwan; Faculty of Food Science and Technology, Ho Chi Minh City University of Industry and Trade, 140 Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City, Viet Nam.
Abstract:
This study aims to evaluate the impact of β-cyclodextrin (β-CD) on the properties of the bitter gourd extract (BGE) under various heating conditions. In this work, the BGE and BGE supplemented with β-CD (0.75%) were heated at 60, 90, and 121 °C for 20 min before measuring the changes of bitterness, total saponin, polyphenol, antioxidant capacity, free amino acid, 5-hydroxymethylfurfural, browning intensity, and pH. It was found that β-CD mitigated the effect of heat treatment on the BGE, especially on saponins and color. Results also showed the debittering ability of β-CD was still preserved after heating duration. The bitter-masking and defensive mechanism of β-CD was also demonstrated using FTIR, thermogravimetric analysis, and molecular docking stimulation. These findings illustrated the addition of β-CD improved the thermal stability of the BGE, opening up the opportunities to incorporate BGE, which is promising in diabetes treatment but thermolabile, into heat-processed products.
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