Survey of Phenolic Compounds Produced in Citrus
Table 2. Percentage and total concentrations of phenolics in Citrus and related species

Citrus medica

[The CRC # represents accession number in the Citrus Variety Collection, University of California, Riverside. Abbreviations used in table: Flav/ol, flavone/flavonol; Flavan, flavanone; Psor, psoralen; Coum, coumarin/cinnamic acid; Unkn, unknown]

Cultivar, CRC #
Plant Part		Proportion							Concentration
		Flav/ol	Flavan	Psor	Coum	Unkn	Void		Flav/ol	Flavan	Coum
		(%)							(mg/g)
Bush, no CRC #
Flavedo		10.5	13.2	26.2	31.0	16.9	2.1		0.81	0.65	0.73
Albedo		4.7	65.1	10.7	9.5	9.7	0.3		0.21	1.84	0.13
Juice		4.7	82.2	3.0	3.0	5.5	1.6		0.05	0.52	0.01
Citron of Commerce, CRC #3518
Leaf		24.8	0.0	0.0	58.3	0.0	16.9		0.26	0.00	0.19
Flavedo		5.7	16.8	0.0	77.5	0.0	0.0		0.03	0.06	0.13
Albedo		0.0	38.9	0.0	61.1	0.0	0.0		0.00	0.03	0.02
Juice		0.0	40.1	0.0	0.0	0.0	59.9		0.00	0.02	0.00
Medulla		27.1	70.1	0.0	0.0	0.0	2.0		0.03	0.06	0.00
Septa membrane		12.0	76.0	0.0	0.0	0.0	12.0		0.02	0.07	0.00
Dulcia, CRC #3654
Leaf		43.3	0.0	4.2	27.6	8.4	16.6		1.28	0.00	0.25
Flavedo		15.8	14.5	5.4	41.7	14.2	8.5		0.08	0.05	0.06
Albedo		0.0	0.0	31.2	22.6	35.7	10.5		0.00	0.00	0.02
Juice		0.0	34.6	23.3	13.8	21.1	7.2		0.00	0.04	0.01
Fingered, CRC #3768
Leaf		61.9	0.0	3.4	21.5	4.7	8.5		3.58	0.00	0.38
Flavedo		9.8	11.3	7.9	64.8	1.8	4.3		0.18	0.13	0.36
Albedo		0.0	23.6	0.0	61.9	14.5	0.0		0.00	0.04	0.05
India Sour, CRC #661
Leaf		16.6	41.0	0.0	0.0	33.3	9.1		0.36	0.56	0.00
Flavedo		16.2	50.9	20.8	10.4	1.7	0.0		0.31	0.63	0.06
Albedo		15.7	55.9	9.9	12.4	4.0	2.1		0.27	0.62	0.07
Juice		17.0	70.8	0.0	5.2	7.1	0.0		0.10	0.27	0.01
Mexican, CRC #3531
Leaf		44.2	10.9	0.0	14.7	14.4	15.7		0.81	0.13	0.08
Flavedo		33.7	0.0	0.0	0.0	52.3	14.0		0.41	0.00	0.00
Albedo		21.1	20.1	0.0	0.0	21.5	37.4		0.03	0.02	0.00
Juice		0.0	23.1	0.0	0.0	19.3	57.6		0.00	0.01	0.00
South Coast Field Station, CRC #3546
Leaf		67.6	0.0	0.0	6.2	7.5	18.8		1.32	0.00	0.04
Flavedo		7.3	6.3	0.0	11.6	71.4	3.4		0.17	0.09	0.08
Albedo		0.0	16.8	0.0	18.6	50.7	14.0		0.00	0.03	0.01
Juice		57.4	32.0	0.0	0.0	0.0	10.6		0.05	0.02	0.00
Spadifora, CRC #3535
Leaf		79.7	0.0	0.0	0.0	5.0	15.3		1.44	0.00	0.00
Flavedo		32.5	2.0	5.2	9.8	46.1	4.4		0.33	0.01	0.03
Albedo		23.2	16.7	0.0	11.0	43.5	5.5		0.04	0.02	0.01
Juice		29.0	10.5	0.0	0.0	0.0	60.5		0.08	0.02	0.00
Yunanensis, CRC #3798
Leaf		58.4	0.0	0.0	14.4	11.6	15.6		1.42	0.00	0.11
Flavedo		10.5	0.0	3.1	41.9	40.5	4.0		0.31	0.00	0.38
Albedo		4.2	4.2	0.0	23.7	57.5	10.5		0.03	0.02	0.05
Juice		30.0	44.9	0.0	0.0	19.3	5.7		0.05	0.04	0.00

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United States Department of Agriculture
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Original posting: April 1, 1999.