Table 4 Monitoring macromolecular changes in C. pyrenoidosa by FTIR analysis
From: A novel nanoemulsion-based microalgal growth medium for enhanced biomass production
Wavenumber range (cm−1) | Assignments | Functional groups | Peak (cm−1) |
|---|---|---|---|
1064–880 | – | Carbohydrate | 965 |
1090–1030 | P = O or Si–O | Nucleic acids | 1089 |
1150–1000 | C–O/v Si–-O | Polysaccharides/siloxane (carbohydrate peak/siloxane shoulder at 1200 cm−1) | 1072 |
1263 | C–O | Ester | 1260 |
1275 | C–O–H | Carbohydrates, proteins, DNA, and RNA | 1266 |
1398–1370 | CH3, CH2, C–O | Proteins, carboxylic groups | 1394 |
1456–1450 | CH2, CH3 | Lipid, protein | 1456 |
1550–1640 | N–H bending | Amide | 1558 |
1655–1638 | C = O | Protein (amide I) | 1652–1653 |
1745–1734 | C = O of esters | Membrane lipids, fatty acids | 1744 |
2875–2850 | CH2, CH3 | Lipids | 2852 |
2930–2920 | CH2 | Lipids | 2922,2924 |