The Effect of Ultraviolet Light on Pigment Production and Morphological Characteristics of Monascus purpureus

Subject Areas : Industrial Food Microbiology

Asiyeh Pahlevaninezhad ¹ ( Department of Food Science and Technology, Faculty of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. )
Mahshid Jahadi ² ( Department of Food Science and Technology, Faculty of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran )
Nafiseh Sadat Naghavi ³ ( Microbiology, Faculty of Biological Sciences, Falavarjan Branch, Islamic Azad University, Isfahan, Iran )
MohammadAli Zia ⁴ ( Department of Basic Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. )

Received: 2020-10-09 Accepted : 2021-01-07 Published : 2021-11-22

Keywords: pigment, Morphological, Monascus purpureus, Ultraviolet Light,

Abstract :

People's concerns about the use of synthetic additives have doubled the importance of the need for research in the field of production of natural pigments, especially microbial pigments. Therefore, in this study, the spore suspension of Monascus purpureus was treated using ultraviolet light at random times (20, 30, 45, 60 seconds) and intervals (20, 30, 35 cm). Then, six suspicious colonies were selected to study the morphological characteristics and their pigment production and biomass growth were studied as liquid culture. The results showed that ultraviolet light caused morphological changes in Monascus purpureus. Pigment production in treated samples increased significantly compared to wild strain (p