Browsing by Author "Syed Mohd Nasir, Sharifah Natasha Aqilah"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Stimulation of Nisin Production from Whey by a Mixed Culture of Lactococcus lactis and Saccharomyces cerevisiae
    (2012-04-18) Syed Mohd Nasir, Sharifah Natasha Aqilah
    L.lactis, a Gram-positive bacterium, grows on lactose or milk sugar and produces lactic acid as a byproduct. L.lactis also generates a non-toxic and antibacterial chemical called nisin which is often used as a natural food preservative. Therefore, a continuous growth of L.lactis is often desirable to increase the production of nisin. However, lactic acid accumulation lowers the pH of fermentation broth thus creates a non-sustainable environment for the growth of L.lactis. This research project aims to create a stress-free growth environment for L.lactis via in-situ removal of lactic acid. Saccharomyces cerevisiae or generally known as Baker’s yeast is used to consume lactic acid as a carbon source for metabolism activity.