Chemical and Biological Technologies in Agriculture

Table 3 Contents of total phenolics, total flavonoids content in turmeric powder according to the various extract and drying methods

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

Sample type	TPC (mg GAE/g turmeric powder)	TFC (mg QCE/g turmeric powder)
Control	8.7 \(\pm\) 0.3^a	9.5 \(\pm\) 0.8^a
Spray drying
Water	10.8 \(\pm\) 0.4^b	10.9 \(\pm\) 0.6^a
50% ethanol	30 \(\pm\) 1^d	43 \(\pm\) 1^b
Freeze drying
Water	13.4 \(\pm\) 0.4^c	9.4 \(\pm\) 0.7^a
50% ethanol	32 \(\pm\) 2^e	43 \(\pm\) 2^b
70% ethanol	36.9 \(\pm\) 0.2^f	69 \(\pm\) 1^d
Spray-freeze drying
Water	13 \(\pm\) 1^c	10.4 \(\pm\) 0.8^a
50% ethanol	32 \(\pm\) 1 ^e	47 \(\pm\) 2^c
70% ethanol	38.6 \(\pm\) 0.2^g	71.8 \(\pm\) 0.7^e

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

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