Table 2.

Summary of extraction methods applied to rice byproducts and antioxidant activity of the extracts, expressed as DPPH antiradical activity.

Rice Byproduct		Extraction Method	DPPH	Reference
Husk		AEE	201.3 ± 13.7 µg/mL	[88]
		EAE-HPP	n.d.	[89]
		SC–CO2	n.d.	[91]
Bran	Pigmented Not pigmented	UAE EAE	14.47 mmol Trolox/g 2.94 mM Trolox	[44] [73]
Bran oil		AEEO	5.52 ± 0.10 mg/mL	[96]
		SC–CO2	0.44 mg/mL	[97]
		O-UASO	215.6 ± 11.2 IC50, mg/g	[100]