Table 2.

Phenolic acid composition of the 4 rice varieties used for the study at different sampling times in 2018 and 2019. Data refer to mean data ± standard deviation; all experiments were conducted with three replicates.

		2018			2019
Rice Variety	Phenolic Compound	Medium Milk (BBCH 75) mg/Kg	Early Dough (BBCH 83) mg/Kg	Ripening (BBCH 89) mg/Kg	Medium Milk (BBCH 75) mg/Kg	Early Dough (BBCH 83) mg/Kg	Ripening (BBCH 89) mg/Kg
CL15	Chlorogenic acid	9.69 ± 8.43	0.23 ± 0.05	<0.01	53.41 ± 21.30	109.45 ± 34.93	2.74 ± 0.27
	Caffeic acid	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
	Syringic acid	1.16 ± 0.56	0.43 ± 0.06	0.15 ± 0.10	<0.01	<0.01	<0.01
	4-hydroxybenzoic acid	11.83 ± 3.97	3.61 ± 0.27	2.13 ± 1.20	3.38 ± 0.19	1.75 ± 0.16	2.34 ± 0.23
	p-Coumaric acid	6.62 ± 1.71	1.39 ± 0.24	0.59 ± 0.17	2.31 ± 0.29	1.06 ± 0.27	1.24 ± 0.15
	Ferulic acid	4.13 ± 0.65	2.30 ± 0.02	2.59 ± 0.58	0.97 ± 0.40	0.80 ± 0.20	2.05 ± 0.31
	Protocatecuic acid	0.46 ± 0.01	0.27 ± 0.11	1.16 ± 0.99	0.14 ± 0.07	0.12 ± 0.04	0.92 ± 0.75
	Gallic acid	0.02 ± 0.02	<0.01	<0.01	0.28 ± 0.06	0.24 ± 0.02	0.27 ± 0.05
CL26	Chlorogenic acid	2.92 ± 0.59	0.20 ± 0.02	0.17 ± 0.03	152.35 ± 109.30	4.53 ± 4.54	15.88 ± 4.34
	Caffeic acid	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
	Syringic acid	0.64 ± 0.19	0.49 ± 0.05	<0.01	<0.01	<0.01	0.39 ± 0.33
	4-hydroxybenzoic acid	6.09 ± 0.72	4.82 ± 0.20	5.05 ± 0.31	20.02 ± 5.68	0.75 ± 0.90	2.94 ± 0.39
	p-Coumaric acid	2.38 ± 0.38	1.25 ± 0.23	0.81 ± 0.14	1.91 ± 0.32	0.27±0.23	1.34 ± 0.34
	Ferulic acid	2.16 ± 0.16	1.69 ± 0.02	2.53 ± 0.18	0.23 ± 0.17	0.29 ± 0.25	1.50 ± 0.09
	Protocatecuic acid	0.26 ± 0.01	<0.01	<0.01	0.14 ± 0.10	0.02 ± 0.02	0.38 ± 0.01
	Gallic acid	<0.01	<0.01	<0.01	0.26 ± 0.08	0.26 ± 0.07	0.17 ± 0.04
SOLE CL	Chlorogenic acid	1.76 ± 1.52	0.35 ± 0.24	0.78 ± 0.57	102.78 ± 57.19	82.79 ± 61.39	13.17 ± 3.62
	Caffeic acid	1.31 ± 0.99	<0.01	<0.01	<0.01	<0.01	<0.01
	Syringic acid	0.32 ± 0.05	<0.01	0.72 ± 0.02	<0.01	<0.01	<0.01
	4-hydroxybenzoic acid	9.90 ± 2.27	5.78 ± 1.24	3.03 ± 0.07	3.57 ± 0.12	1.71 ± 0.23	2.42 ± 0.27
	p-Coumaric acid	5.37 ± 1.93	1.98 ± 1.98	0.81 ± 0.14	2.49 ± 0.04	1.63 ± 0.38	1.39 ± 0.35
	Ferulic acid	3.93 ± 1.71	2.77 ± 0.99	5.92 ± 3.69	1.97 ± 1.03	1.88 ± 0.21	2.16 ± 0.35
	Protocatecuic acid	0.33 ± 0.04	0.20 ± 0.01	0.17 ± 0.10	0.18 ± 0.08	0.20 ± 0.08	0.44 ± 0.06
	Gallic acid	<0.01	0.08 ± 0.02	<0.01	0.19 ± 0.01	0.21 ± 0.01	0.17 ± 0.01
TERRA CL	Chlorogenic acid	14.46 ± 14.24	0.65 ± 0.11	0.05 ± 0.01	141.61 ± 31.00	75.74 ± 15.03	30.71 ± 8.03
	Caffeic acid	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
	Syringic acid	0.62 ± 0.14	<0.01	<0.01	<0.01	<0.01	0.29 ± 0.23
	4-hydroxybenzoic acid	21.82 ± 5.93	3.80 ± 0.12	4.41 ± 0.55	2.84 ± 0.16	1.33 ± 0.10	2.54 ± 0.12
	p-Coumaric acid	8.45 ± 0.42	1.17 ± 0.38	0.98 ± 0.05	1.43 ± 0.17	0.69 ± 0.13	0.88 ± 0.03
	Ferulic acid	4.07 ± 1.32	2.38 ± 0.71	3.77 ± 1.79	1.05 ± 0.15	0.88 ± 0.08	2.14 ± 0.47
	Protocatecuic acid	1.04 ± 0.04	0.61 ± 0.32	0.46 ± 0.01	0.28 ± 0.04	0.20 ± 0.11	0.59 ± 0.02
	Gallic acid	<0.01	0.01 ± 0.01	<0.01	0.23 ± 0.02	0.18 ± 0.01	0.18 ± 0.01