. 2022 May 24;9:888745. doi: 10.3389/fnut.2022.888745

Table 1.

Contents of total flavonoids, flavanones and PMFs in CPFEs (mg/g DW).

Cultivar	TFC	Flavanones							PMFs
		Eri	Nar	Hed	Did	Pon	Nag	Het	Sin	Nob	Tan	DN
Satsuma mandarin	96.22 ± 0.51^b	2.76 ± 0.09^f	0.19 ± 0.01ⁱ	41.33 ± 0.21^b	4.97 ± 0.02^b	0.42 ± 0.00^c	ND	0.13 ± 0.00^g	1.61 ± 0.00^d	5.90 ± 0.01^b	3.87 ± 0.01^a	0.34 ± 0.00^a
Chachiensis	86.54 ± 0.63^c	1.93 ± 0.04^g	0.17 ± 0.03ⁱ	43.02 ± 0.37^a	2.55 ± 0.01^d	0.09 ± 0.00^f	ND	0.05 ± 0.00^h	2.31 ± 0.00^b	16.91 ± 0.14^a	1.59 ± 0.01^b	ND
Ponkan	67.17 ± 0.67^e	0.47 ± 0.01ⁱ	22.86 ± 0.15^e	42.05 ± 0.11^b	0.70 ± 0.01^f	11.67 ± 0.06^a	ND	0.29 ± 0.00^c	0.06 ± 0.00^h	1.33 ± 0.01^d	0.28 ± 0.00^e	0.04 ± 0.00^b
Lane late navel orange	53.45 ± 0.59^h	5.71 ± 0.03^d	4.57 ± 0.03^g	40.16 ± 0.23^c	1.24 ± 0.16^e	0.43 ± 0.01^c	0.26 ± 0.01^a	1.37 ± 0.03^a	1.84 ± 0.02^c	5.67 ± 0.01^b	0.73 ± 0.00^c	0.08 ± 0.00^b
Blood orange	60.71 ± 0.63^g	0.96 ± 0.02^h	2.24 ± 0.16^h	35.07 ± 0.12^e	2.55 ± 0.06^d	0.23 ± 0.07^d	0.09 ± 0.00^d	0.07 ± 0.00^h	0.16 ± 0.00^g	0.59 ± 0.00^e	0.17 ± 0.00^f	0.03 ± 0.00^b
Apple pomelo	50.60 ± 0.80ⁱ	1.74 ± 0.53^g	40.62 ± 0.14^c	1.77 ± 0.13^h	0.08 ± 0.01ⁱ	0.15 ± 0.01^e	ND	0.20 ± 0.00^e	ND	0.11 ± 0.00^g	ND	ND
Majia pomelo	52.27 ± 0.39^h	2.80 ± 0.03^f	44.57 ± 0.74^b	1.84 ± 0.37^h	0.33 ± 0.01^g	0.09 ± 0.01^f	ND	0.05 ± 0.00^h	0.18 ± 0.00^g	0.30 ± 0.00^f	0.02 ± 0.00^g	ND
Grapefruit	72.82 ± 1.56^d	4.91 ± 0.11^e	52.03 ± 0.51^a	ND	0.07 ± 0.00ⁱ	0.16 ± 0.01^e	ND	0.05 ± 0.00^h	ND	0.04 ± 0.00^h	ND	ND
Dekopon	62.33 ± 1.07^f	0.95 ± 0.01^h	29.56 ± 0.51^d	39.25 ± 0.91^c	4.49 ± 0.16^c	1.23 ± 0.06^c	0.15 ± 0.00^c	0.23 ± 0.04^d	2.66 ± 0.05^a	1.77 ± 0.01^c	0.04 ± 0.00^g	ND
Fertile orange	67.98 ± 0.86^e	4.78 ± 0.10^e	10.97 ± 0.45^f	37.35 ± 0.38^d	10.50 ± 0.04^a	0.38 ± 0.09^c	0.18 ± 0.01^b	0.07 ± 0.00^h	0.13 ± 0.01^g	0.34 ± 0.00^f	0.04 ± 0.00^g	ND
Lemon	103.48 ± 0.68^a	27.72 ± 0.47^a	0.02 ± 0.00^j	24.51 ± 0.18^f	0.19 ± 0.01^h	0.07 ± 0.00^f	0.03 ± 0.00^f	0.08 ± 0.01	0.69 ± 0.00^f	0.32 ± 0.00^f	ND	ND
Sichuan kumquat	30.85 ± 0.56^k	9.29 ± 0.20^b	1.96 ± 0.08^h	0.49 ± 0.00ⁱ	1.52 ± 0.01^e	ND	0.10 ± 0.00^d	0.74 ± 0.00^b	0.87 ± 0.00^e	0.12 ± 0.00^g	0.04 ± 0.00^g	ND
Longyan kumquat	32.47 ± 0.96^j	5.70 ± 0.92^d	11.40 ± 0.27^f	3.11 ± 0.12^g	0.62 ± 0.02^f	1.69 ± 0.02^b	ND	0.18 ± 0.00^f	0.93 ± 0.00^e	1.93 ± 0.00^c	0.38 ± 0.00^d	0.03 ± 0.00^b
Bergamot	27.62 ± 1.25^l	8.55 ± 0.02^c	0.16 ± 0.00ⁱ	3.18 ± 0.01^g	0.17 ± 0.00^h	0.24 ± 0.00^d	0.07 ± 0.01^e	0.08 ± 0.01^h	ND	0.46 ± 0.00^e	ND	ND

TFC, total flavonoid content; Eri, eriocitrin; Nar, naringin; Hed, hesperidin; Did, didymin; Pon, poncirin; Nag, naringenin; Het, hesperitin; Sin, sinensetin; Nob, nobiletin; Tan, tangeretin; DN, 5-O-demethyl-nobiletin.

Results were the mean ± SD (n = 3) on a dried weight (g) of citrus peel flavonoid extracts. Flavonoid contents were calculated as mg rutin equivalents (RE)/g DW. ND, not detected. Different letters above the error bars in the same column indicate significant differences among varieties based on Tukey's test (P <0.05).