4.7 Article

Low-Temperature Vacuum Drying on Broccoli: Enhanced Anti-Inflammatory and Anti-Proliferative Properties Regarding Other Drying Methods

Journal

FOODS
Volume 12, Issue 17, Pages -

Publisher

MDPI
DOI: 10.3390/foods12173311

Keywords

Brassicaceae; bioactive compounds; drying processes; inflammatory inhibitors; MDA-MB-231 cell line

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Low-temperature vacuum drying (LTVD) is a promising method for drying vegetables that can preserve active compounds with therapeutic properties. In this study, LTVD was found to have the highest content of bioactive compounds in dried broccoli, as well as high anti-inflammatory and anti-proliferative activities. Comparatively, other drying methods showed lower retention of bioactive compounds.
Low-temperature vacuum drying (LTVD) has shown great potential for drying vegetables. It could avoid excessive degradations of active compounds with potential therapeutic agents. In this study, the effect on several relevant bioactive compounds, anti-inflammatory activity, and anti-proliferative activity of broccoli (Brassica oleracea var. italica) were evaluated. Effects of other drying methods, including vacuum drying (VD), convective drying (CD), infrared drying (IRD), and freeze drying (FD), were also comparatively evaluated. The results of all dried samples showed high polyunsaturated fatty acid contents (of up to 71.3%) and essential amino acid contents (of up to 8.63%). The LTVD method stands out above the other drying methods, since it obtained the highest content of total phenols, chlorogenic acid, and ferulic acid. Both the LTVD and CD samples demonstrated high anti-inflammatory and anti-proliferative activities. These CD and LTVD samples were also the most active against the breast carcinoma MDA-MB-23 cell line. Due to the good retention of bioactive compounds via LTVD, the obtained dried broccoli here can be used in a near time as an ingredient for the development of novel natural products with anti-inflammatory and anti-proliferative effects.

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