Comparison of Indian corn with The US and South American commodity corn for wet milling starch yields

Higher starch extractability is critical for improving the profitability of a corn wet milling process. The starch extractability of Indian corn was compared to the corn grown in the USA, Brazil, and Argentina. Two corn crops (rainy and winter season) are produced every year in India. The endosperm hardness of Indian samples was similar to South American corn and higher than the US corn. Extractable starch yields of Indian corn samples were 2–3 % lower than the average starch yield of US commodity corn, however, was comparable with Brazilian, and Argentinian. No significant difference in starch yields between two crop years was observed. However, starch yield from the rainy (Kharif) season was lower compared to the winter (Rabi) season. Like South American corn, Indian corn contains a hard endosperm and resulted in a lower starch yield than the soft endosperm US corn. This information is useful for corn wet milling plants that buy commodity corn from various geographic locations around the world.