Land usage attributed to corn ethanol production in the United States: sensitivity to technological advances in corn grain yield, ethanol conversion, and co-product utilization

Table 4 Composition of feed co-products ^a from ethanol processing scenarios, assuming 86% dry grind with 50% skimming oil and 14% wet milling

	Distillers dried grains with solubles		Corn gluten feed		Corn gluten meal
	Protein (%)	Fat (%)	Protein (%)	Fat (%)	Protein (%)	Fat (%)
Baseline^b	27.35	9.67	17.39	4.21	58.25	4.74
Individual processes:
Conventional dry grind, no oil skimming	27.30	10.43	n/a	n/a	n/a	n/a
Conventional dry grind, with oil skimming	27.40	8.90	n/a	n/a	n/a	n/a
Wet milling	n/a	n/a	17.39	4.21	58.25	4.74
Scenario 5: Full starch conversion	29.10	10.28	17.39	4.21	58.25	4.74
Scenario 6: Complete fiber conversion plus full starch conversion	28.58	10.10	17.39	4.21	58.25	4.74

^aExpressed on a commercial or ‘as is’ basis. Dry matter contents of 89.31%, 87.13%, and 90.04% for DDGS, CGF, and CGM, respectively[40]. ^bWeighted industry averages.