Table 1. Changes in pH and soluble solid of chaga mushroom extract during storage

	Storage period (week)	Temperature (°C)
		−20	25	35	45
pH	0	5.33±0.021)A2)d3)	5.33±0.02Ac	5.33±0.02Ac	5.33±0.02Ac
	2	5.38±0.01Bc	5.42±0.00Ab	5.42±0.01Ab	5.42±0.01Ab
	4	5.41±0.01Cb	5.43±0.01Bb	5.43±0.01Bab	5.45±0.01Aa
	6	5.41±0.00Cb	5.43±0.01Ab	5.42±0.01ABb	5.42±0.01BCb
	8	5.44±0.01Aa	5.45±0.01Aa	5.45±0.01Aa	5.45±0.01Aa
Soluble solid (°Brix)	0	10.0±0.0Aa	10.0±0.0Aab	10.0±0.0Aa	10.0±0.0Aa
	2	10.0±0.0Aa	10.0±0.0Aab	10.0±0.1Aa	10.0±0.0Aa
	4	9.9±0.1Ab	10.0±0.1Ab	10.0±0.0Aa	9.9±0.1Ab
	6	10.0±0.0Aa	10.0±0.0Aab	10.0±0.0Aa	10.0±0.0Aa
	8	10.0±0.0Aa	10.1±0.1Aa	10.1±0.1Aa	10.0±0.0Aa

All values are expressed as mean±SD of triplicate determinations.
Means within row with different superscripts are significantly different (p<0.05).
Means within column with different superscripts are significantly different (p<0.05).