Journal
FOODS
Volume 11, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/foods11172648
Keywords
melon juice; high-intensity ultrasound; bioactive compounds; gallic acid; syringic acid; antioxidant capacity; microbiological quality
Categories
Funding
- CONACyT-Mexico [751661]
- Spanish research agency (AEI) [MCIN/AEI/10.13039/501100011033, PID2019-106148RR-C43]
Ask authors/readers for more resources
This study investigated the bioactive compounds, antioxidant capacity, and microbiological quality of melon juice processed by high-intensity ultrasound (HIUS). The results showed that HIUS processing significantly enhanced the antioxidant capacity of melon juice and reduced microbial load.
The bioactive compounds, antioxidant capacity and microbiological quality of melon juice processed by high-intensity ultrasound (HIUS) were studied. Melon juice was processed at two ultrasound intensities (27 and 52 W/cm(2)) for two different processing times (10 and 30 min) using two duty cycles (30 and 75%). Unprocessed juice was taken as a control. Total carotenoids and total phenolic compounds (TPC) were the bioactive compounds analyzed while the antioxidant capacity was determined by DPPH, ABTS and FRAP assays. The microbiological quality was tested by counting the aerobic and coliforms count as well as molds and yeasts. Total carotenoids increased by up to 42% while TPC decreased by 33% as a consequence of HIUS processing regarding control juice (carotenoids: 23 mu g/g, TPC: 1.1 mg GAE/g), gallic acid and syringic acid being the only phenolic compounds identified. The antioxidant capacity of melon juice was enhanced by HIUS, achieving values of 45% and 20% of DPPH and ABTS inhibition, respectively, while >120 mg TE/100 g was determined by FRAP assay. Further, the microbial load of melon juice was significantly reduced by HIUS processing, coliforms and molds being the most sensitive. Thus, the HIUS could be an excellent alternative supportive the deep-processing of melon products.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available