Folin-Ciocalteu Reaction Alternatives for Higher Polyphenol Quantitation in Colombian Passion Fruits

Table 4

F-C reaction parameters (reactants, concentrations, and reactant proportion) applied to different plant matrices (F-CR, Folin-Ciocalteu reagent).

Food matrix	F-CR; (mL)	Na2CO3; (mL)	Reactant proportion	Reference
Fruit juice	2.5 (10%)	2.0 (7.5%)	2.5 : 2	[33]
Fresh fruit	6.0 (20%)	1.0 (7%)	6 : 1	[34]
Fresh fruit	2.5 (10%)	2.0 (7.5%)	2.5 : 2	[35]
Dehydrated fruit pulp	2.2 (10%)	1.0 (20%)	2.2 : 1	[36]
Lyophilized fruits and vegetables	10.0 (10%)	10.0 (7.0%)	1 : 1	[37]
Lyophilized leaves	2.0 (20%)	10.0 (10%)	2 : 1	[38]
Lyophilized whole plant	0.2 (20%)	0.2 (10%)	1 : 1	[39]