Carbs pt.2

Pericorp

resistant to microbial, prevents digestion

Two types of starch

amylose and aylopeptin

Amylose Bond

alpha 1,4 bond straight point

amylopeptin

alpha 1,4 and 1,6 bonds, branch points

Breakdown of Maltose + water (rumiants)

2 glc fermentation, VFA less than or equal to 50 ATP, CO2 and CH4

Breakdown of Maltose + water (non-ruminants)

2 glu, absorbed by SI, greater or equal to 68 ATP

Breakdown of Cellotose plus water in ruminants

cellobiase, then 2 glc fermentation, VFA less or equal 50 ATP, CO2 and CH4

1. Mammalian Digestion of NCHO

saliva amylase hydrolyze alpha 1,4 bonds

2. Mammalian Digestion of NCHO

stomach pH decrease, deactivates salivary amylase

3.Mammalian Digestion of NCHO

SI most ME NCHO occur, all glu, gal, fru are absorbed

Pancreatic amylase role during Mammalian Digestion of NCHO

hydrolyze alpha 1,4 bonds

amylose —-?—→ ?

p. amylase and h2O, maltose and maltotrious

amylopeptin —-?—→ ?

p. amylase and H2O breaks it into maltose and maltotrious and isomaltose (a. 1,6)

Define Amylose

first components of starch, slower digestion rate

Define Amylopectin

other major component of starch, faster digestion rate

How d