Group 1 - The article discusses various types of yeast used in baking, highlighting their characteristics and applications [3][4][8][10][14][16]. - Fresh yeast is noted for its strong osmotic pressure resistance and high sucrose conversion enzyme activity, making it suitable for high-sugar doughs [3][10]. - Active dry yeast is described as having a similar function to fresh yeast but with a weaker effect, requiring pre-soaking in warm water before use [4][8]. - High-sugar yeast is recommended for doughs with sugar content exceeding 7%, while low-sugar yeast is suitable for products with less sugar [10][15][16]. - Low-sugar yeast utilizes maltose derived from starch as its primary nutrient source, making it effective in low-sugar environments [16][17]. Group 2 - The article emphasizes the importance of yeast selection based on sugar content in dough, which affects fermentation and product quality [10][15][16]. - It explains that high-sugar yeast accelerates the breakdown of sucrose, providing essential nutrients for yeast growth [14][15]. - The article also mentions the potential risks of improper storage temperatures for fresh yeast, which can lead to loss of activity and spoilage [3].