When PO is a protein (%) before fermentation PR's protein (%) after the fermentation O: shrimp shell weight (g) before fermentation R is a shrimp shell weight (g)
When PO is the protein content (%) before fermentation. PR is the protein content (%) after fermentation. O is shrimp shell weight (g) before fermentation. R is shrimp shell weight (g) after fermentation.
When PO is a protein content (%) before fermentation PR is a protein content (%) after fermentation O is weight เปลือกกุ้ง (g) before fermentation R is weight shrimp shell (g) after fermentation