Abstract
Nostoc sphaeroides has been used as herbal medicine and dietary supplement in Asian countries from prehistoric times. When N. sphaeroides is pasteurized using conventional high-pressure (HP) steam (121 °C, 30 min), its natural texture and nutritional ingredients are negatively affected. This study investigated the effect of radio frequency (RF) heating on the degree of microbial kill, texture, water distribution, and rheological properties of N. sphaeroides and compared the effect of HP steam (121 °C, 30 min) pasteurization on these parameters. RF (6 kW, 27 MHz) pasteurization was carried out for 10, 20, and 30 min at 67 °C. The results showed that the RF heating carried out for 20 min achieved a 3 log reduction of bacteria which met the safety standard. The effects of RF pasteurization on the texture, water distribution, and rheological properties of N. sphaeroides were significantly lower than that in HP steam pasteurization. Therefore, the application of RF heating in N. sphaeroides would help broaden its application in food, health, and pharmaceutical formulations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
