Some natural substances also have improved role

 The enzyme preparation is used in bread maltose α- amylase, fungal α- amylase, glucose oxidase , fungal xylanases , lipases , fungal lipase, hemicellulase . Some natural substances also has a role in improving bread , such as wild Artemisia seeds , active soy flour , wheat gluten and so on. Ethyl lactate of substances increased loaf volume , improve the internal structure , to extend the shelf life have their corresponding effect . In addition, some improvers have been added inorganic salts, such as ammonium chloride , calcium sulfate , ammonium phosphate, calcium dihydrogen phosphate , zinc lactate from the yeast nutrient or adjust water hardness and pH adjustment effect. Improver adding some vitamin B1, B2, iron, calcium , wheat germ meal , nicotinic acid, etc. , are mainly from the fortification effect.