The Effects of Cordyceps sinensis (Berk.) Sacc. and Gymnema inodorum (Lour.) Decne. Extracts on Adipogenesis and Lipase Activity In Vitro

Table 2

Fourier transform-infrared band assignments.

Second derivative spectra band position (cm^−1)	Band assignments
2964	CH3 asymmetric stretch associated with membrane phospholipid methyl terminals: mainly lipid
2923	CH2 asymmetric stretch associated with membrane phospholipid methylene groups: mainly lipids, some contribution from proteins, carbohydrates, and nucleic acids
2854	CH2 symmetric stretch: mainly lipids, some contribution from proteins, carbohydrates, and nucleic acids
1735	C=O stretching vibration: lipids (triglycerides and cholesterol esters)
1650	Amide I: C=O (80%) and C−N (10%) stretching, N−H (10%) bending vibration: α-helix proteins
1542	Amide II: N−H (60%) bending and C−N (40%) stretching vibration: α-helix proteins
1457	CH2 bending vibration: lipids and proteins
1399	COO-symmetric stretching and CH3 bending vibration: lipids, proteins
1234	PO2-asymmetric stretching vibration: RNA, DNA, and phospholipids
1084	PO2-symmetric stretching vibration: RNA, DNA
1157	C−O vibration: glycogen and other carbohydrates
1045	C−O vibration: glycogen and other carbohydrates