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Table 1 Overview of medium-chain fatty acids and monoglycerides

From: Medium-chain fatty acids and monoglycerides as feed additives for pig production: towards gut health improvement and feed pathogen mitigation

 

Compound name

Chemical structure

Molecular weight, Da

Melting point, °C

Visual appearance

Smell

Fatty Acids

Caproic acid (C6H12O2)

116.2

− 3.4

Oily colorless liquid

Strong

Caprylic acid (C8H16O2)

144.2

16.5

Oily colorless liquid

Moderate

Capric acid (C10H20O2)

172.3

31.6

White crystalline powder

Mild

Lauric acid (C12H24O2)

200.3

43.8

White powder

Minor

Monoglycerides

Glycerol monocaproate / Monocaproin (C9H18O4)

190.2

19.4

Colorless liquid

Minor

Glycerol monocaprylate / Monocaprylin (C11H22O4)

218.3

35.6

White powder

Minor

Glycerol monocaprate / Monocaprin (C13H26O4)

246.3

51.4

White powder

Minor

Glycerol monolaurate / Monolaurin (C15H30O4)

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274.4

62.5

White granular powder

Minor

  1. The smell level is ranked in the order of strong, moderate, mild, and minor. The molecular formula of each compound is provided in parentheses and the chemical structures of MCFAs are drawn in the deprotonated state.