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Table 1 Concentration of curcuminoids in turmeric powder according to the various extract and drying methods

From: Preparation of turmeric powder with various extraction and drying methods

Sample type

Curcuminoids (mg/g turmeric powder)

CUR

DMC

BDMC

Total

Control

1.233 \(\pm\) 0.002d

0.302 \(\pm\) 0.002d

0.221 \(\pm\) 0.004c

1.756 \(\pm\) 0.007d

Spray drying

 Water

0.611 \(\pm\) 0.002a

0.182 \(\pm\) 0.001a

0.151 \(\pm\) 0.002a

0.945 \(\pm\) 0.003a

 50% ethanol

3.448 \(\pm\) 0.004e

0.865 \(\pm\) 0.004e

0.544 \(\pm\) 0.008d

4.86 \(\pm\) 0.02e

Freeze drying

 Water

0.798 \(\pm\) 0.002b

0.247 \(\pm\) 0.001b

0.206 \(\pm\) 0.003b

1.251 \(\pm\) 0.003b

 50% ethanol

4.075 \(\pm\) 0.003f

1.089 \(\pm\) 0.004g

0.736 \(\pm\) 0.007 f

5.90 \(\pm\) 0.01 f

 70% ethanol

8.34 \(\pm\) 0.02h

2.\(399\pm\) 0.006h

1.836 \(\pm\) 0.009h

12.58 \(\pm\) 0.03h

Spray-freeze drying

 Water

0.892 \(\pm\) 0.003c

0.276 \(\pm\) 0.001c

0.230 \(\pm\) 0.003c

1.397 \(\pm\) 0.003c

 50% ethanol

4.227 \(\pm\) 0.005g

1.060 \(\pm\) 0.005f

0.67 \(\pm\) 0.01e

5.95 \(\pm\) 0.02g

 70% ethanol

9.443 \(\pm\) 0.009i

2.704 \(\pm\) 0.006i

2.06 \(\pm\) 0.02h

14.21 \(\pm\) 0.02i

  1. 1) All values are represented as mean \(\pm\) standard deviation (S.D.) (n = 3)
  2. 2) Different superscript letters in the same column denote significant differences (Duncan’s range test, p < 0.05)