Table 2. Free amino acid contents of Momordica charantia according to different drying methods

(mg/100 g-dry weight)

Amino acid Drying methods1)
SD HD FD ID
Essential amino acid Isoleucine 47.65±2.62 58.38±0.59 43.09±1.08 64.78±1.05
Leucine 62.57±1.33 49.64±1.52 45.73±0.15 64.21±1.65
Lysine 72.75±1.58 51.63±2.11 44.42±0.89 63.72±2.25
Methionine 11.90±2.13 6.14±0.21 20.88±1.90 3.74±0.08
Phenylalanine 70.80±2.63 69.28±1.38 67.37±2.58 76.26±1.52
Threonine 52.81±3.01 81.29±2.96 45.03±2.35 101.31±2.89
Tryptophan 77.78±0.17 52.76±2.52 98.75±1.52 55.88±0.82
Valine 7.41±1.11 68.49±0.52 69.74±0.99 85.43±3.02
Total essential amino acid 403.68±2.51 437.60±3.74 435.0±2.12 515.34±1.58
Non-essential amino acid Alanine 57.28±4.20 43.92±1.05 140.74±1.20 69.37±1.05
Arginine 296.42±2.01 361.9±2.11 279.31±1.85 343.89±2.95
Aspartic acid 60.75±2.62 33.42±1.01 92.56±1.25 42.56±3.56
Glutamic acid 110.59±3.22 4.44±0.51 45.88±2.56 6.92±0.58
Glycine 17.44±1.50 7.54±0.28 26.42±3.12 12.74±1.11
Histidine 46.69±0.52 57.72±0.72 52.98±0.95 57.79±2.02
Serine 38.16±2.10 25.57±1.55 69.40±5162 39.39±2.89
Tyrosine 52.36±1.62 35.58±1.56 69.57±1.25 35.84±3.25
Total non-essential amino acid 679.69±1.85 570.18±2.10 776.86±0.35 608.50±1.85
Total amino acids (g/100 g-dry weight) 1,088.37±2.89 1,007.78±1.85 1,211.88±2.78 1,123.84±1.96
1)SD, sun drying; HD, hot-air drying; FD, freeze drying; ID, infrared drying.