Is yeast halaal

Baker's Yeast, '''Torula Yeast are a Halal yeast. .while .. Wine Yeast , alcohol yeast are Haram....

''' The Islamic Scholars have different opinions regarding the brewer's yeast extracts. Some considered it Halal, some say, it is Mukrooh and some advise not to consume foods containing brewer's yeast extract. Some Islamic scholar considered it Halal if the alcohol penetrated inside the yeast cell and changed to new thing. There is no literature available to indicate that alcohol inside yeast react and changed to a new thing. This is the reason we do not consider yeast extract from beer making as a Halal ingredient.