From the Angle of public nutrition improvement, food fortification is the most safe, economic and effective way.

从公众营养改善的角度来说，食物强化是最为安全、经济和有效的方式。

youdao

Using soybean meal hydrolyzed with 1398 neutral proteinase as the protein source, the synthesis conditions of zinc calcium iron chelate of compound amino acids for food fortification were studied.

利用脱脂豆粕的1398中性蛋白酶水解液作为复合氨基酸来源，对食品营养强化剂复合氨基酸锌、钙、亚铁络合物的制备工艺条件进行了初步研究。

youdao

Improving public malnutrition condition have 3 kinds of channel: adjusting diet structure, employing nutrition supplement and food fortification.

改善营养不良状况有3种途径，即调整饮食结构，进行食物营养强化和使用营养补充剂。

youdao

In addition, the Scientific Advisory Committee on Nutrition (SACN) is looking into proposals for further fortification of food and drink, as happens in countries including the US, Canada and Finland.

BBC: Cheap vitamin D 'would boost health'

Ms. Warner recounts what life was like in poor areas before the introduction of vitamins into food substances, the fortification of white flour and milk, and the widespread availability of items like orange juice: Many people suffered from rickets (because of insufficient vitamin D and calcium), scurvy (vitamin C), pellagra (vitamin B3) and beriberi (vitamin B1).

WSJ: Book Review: Salt Sugar Fat | Pandora's Lunchbox