Microcapsules contain vitamin feed that fortified shellfish to address human undernutrition.

More than 2 billion people worldwide are micronutrient-free and have specific regional defects. Fortified foods with micronutrients have become the industry standard for improving public health. Double-shell shellfish (e.g. oysters, clams and mussels) are the most sustainable source of animal protein on the planet, and the market is growing rapidly, with Production in China increasing 1,000-fold since 1980 to 36 kg per capita per year. Bicyctals are unique in that the micronutrients they consume at the end of life are digested by humans, who can digest entire organisms, including the intestines.
David F. Willer and David C. Aldridge of the Department of Zoology at the University of Cambridge have developed a new microcapsule vector that provides micronutrients for double-shell shellfish and is tailored to the best size, shape, buoyration and portability to demonstrate the potential of fortified bicellal shellfish to address nutritional deficiencies in humans. Vitamin A and D microcapsules were fed at an initial dose of 3% for only 8 hours, and the vitamin content in oyster tissue increased. Two of these double-shell shellfish provide enough vitamins A and D to meet the recommended daily intake (Recommended Daily Allowances, RDAs). The spread of this technology and its application in other bishell shellfish, including clams and mussels, may provide a low-cost, highly sustainable mechanism to help address global nutritional deficiencies.
article, "Vitamin Bullets. Microencapsulated Feeds to Fortify Shellfish and Human Nutrient Nutrient Information are published in Frontiers in Nutrition in July 2020. Translated by Yuan Yue, editorial director of food science, and edited by Zhang Ruimei. The picture is from Baidu picture.