Table 1.

Agri-food waste sources of chlorogenic acids (CGAs) and their relative content (referred to as fresh—fw or dry weight—dw).

Source	Type of Waste	CGAs Content	Ref.
Cauliflower	external leaves, stems	21–98 mg/kg fw	[40]
Celery	external leaves, stems	13–19 mg/kg fw	[40]
Coffee	husk	337 μg/g dw 1	[23]
		90,567 μg/g dw	[41]
	spent ground	22.08 mg/g dw	[42]
		1.36 mg/g dw	[43]
		1700–1757 mg/kg dw	[20]
		19.6 mg/g dw	[22]
		0.93 mg/g fw	[44]
	silverskin	1.06–2.68 g/kg dw	[24]
Artichoke	bracts	3.73 mg/g dw	[30]
		12.98 mg/g dw	[45]
		0.02–16.47 mg/g dw	[46]
	leaves, stems	3–16 mg/g dw	[29]
	leaves, outer bracts, stems	74.2 mg/kg dw	[28]
	stems	8.86 mg/g dw	[30]
	stalks	1.56 mg/g dw	[45]
	receptacles	32.10 mg/g dw	[45]
	leaves	2.39 mg/g dw	[45]
Tomato	peel	6–62 mg/kg fw	[36]
		3.04–4.54 mg/g dw	[38]
		4.05 mg/kg dw	[37]
Potato	peel	6.63 mg/g dw	[47]
		0.032–1.03 mg/g dw	[48]
		0.15 mg/ g dw	[49]
		1.3–4.1 mg/g dw	[26]
Walnut	leaves	8.6–10.7 mg/g dw	[35]
Blueberry	leaves	47.271–51.631mg/g dw	[31]
Mango	peel	33.97 μg/g dw	[50]
Carrot	pomace	17.79 mg/g dw	[33]
Cocoa	bean shell	0.76 mg/g dw	[51]
Citrus	peel	20.52 μg/g dw	[52]
Sunflower	by-products	3.2–15 mg/g dw	[53]
Almond	skin	15.99 mg/g dw	[32]
Tobacco	scrap, midrib, dust	36.4–804.2 μg/g dw	[54]
	residual stalks	1198.0–1998.6 μg/g dw	[55]
Olive	exhaust olive pomace	0.31 mg/g dw	[56]
	tree biomass	0.24 mg/g dw	[56]
	leaves	0.09 mg/g dw	[56]
Apple	pomace	0.718 mg/g dw	[57]
Pomegranate	peel	3.07 mg/g dw	[34]

¹ content expressed as 3-CQA.