11
Mention the sequence of ethanol production from wet milling of corn
(A) . Fermentation
(B) . Grinding
(C) . Degerming
(D) . Saccharification
Choose the correct answer from the options given below:
EXPLANATION
Food Extrusion Cooking Technology
- Corn Wet-Milling Ethanol Production Process Flow:
- The standard sequential operations in producing bioethanol from corn via wet milling are:
- Grinding / Milling: After steeping in sulfur dioxide solution, corn kernels undergo coarse degerming grinding to release the rubbery germ.
- Degerming: Hydrocyclone centrifugal separation extracts the buoyant corn germ for corn oil extraction.
- Saccharification: Liquefied starch is enzymatically broken down into fermentable D-glucose monomers using fungal glucoamylase enzymes.
- Fermentation: Yeast (Saccharomyces cerevisiae) metabolizes glucose into ethanol and carbon dioxide under anaerobic conditions.
- Conclusion: (B), (C), (D), (A) (Option 2).
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