Table 3
Organic acid contents of Yakju containing lotus leaves pretreated differently before and after cold storage

Pretreatment methods		Organic acids (mg%)
Pretreatment methods		Oxalic	Citric	Tartaric	Malic	Succinic	Lactic	Acetic
Before cold storage	Fresh	9.10±0.97^1)a2)	69.85±2.35^a	2.60±0.39^ab	14.50±0.55^b	91.05±2.57^a	98.73±4.49^a	7.43±0.48^ab
	Blanching	4.55±0.48^b	55.96±0.38^b	3.22±0.63^a	14.05±0.27^b	89.85±3.19^a	99.01±7.78^a	5.88±0.41^c
	Roasting	9.87±0.65^a	69.72±1.59^a	2.59±0.55^ab	15.84±1.05^a	91.89±2.27^a	96.70±4.80^a	6.67±0.62^bc
	Drying	6.12±1.24^b	67.82±3.85^a	1.59±0.77^b	14.53±0.43^b	93.48±3.26^a	101.64±2.03^a	7.57±0.14^a
	F-value	23.917^***3)	23.151^***	3.783^NS4)	4.322^**	0.853^NS	0.458^NS	9.090^**
After cold storage	Fresh	9.62±0.62^a	67.00±2.27^a	2.70±0.11^ab	15.10±0.50^a	88.67±2.47^ab	103.00±3.67^a	5.93±0.80^ab
	Blanching	0±0^c	50.96±0.98^c	3.16±0.25^a	12.96±0.54^b	86.14±2.50^b	98.48±3.76^ab	5.48±0.62^b
	Steaming	7.71±0.34^b	61.34±1.05^b	3.01±0.56^a	14.58±0.78^a	86.66±1.75^b	103.92±2.65^a	5.59±0.13^b
	Roasting	8.88±1.00^a	68.88±1.68^a	2.34±0.19^c	15.73±0.49^a	91.86±2.24^a	94.70±2.40^b	6.83±0.42^a
	F-value	158.824^***	77.915^***	3.667^NS	12.153^**	3.950^NS	5.435^**	3.090^NS

mean±SD (n=3).
Means in a column by different superscripts are significantly different at p<0.05 significance level by Duncan's multiple range test.
*p<0.05, **p<0.01, ***p<0.001.
means no significance.