Table 1.

Comparison of the main steps of the process by conventional and improved methods

Step	Conventional method	Improved method	Δ* (%)
Required sample (mg)	1000	50	95
Extraction time
Free phenolics (min)	15	30	− 100
Bound phenolics (h)	12	10	17
Drying time (days)	7	2	71
Consumed solvents
Free phenolics (mL)	90	46	49
Bound phenolics (mL)	1080	376	65
Solvents waste (mL)	324	106	67
Number of samples per batcha	9	66	− 633

Δ*: Difference between conventional and improved methods expressed as percentages

^aAccording to the capabilities of the available centrifuge equipment