for products capitalizing on health claims are made by several methods; the most employed being conventional reflux heating or sonication extraction. Both methods share the same pre-preparation stage for samples before extraction. All samples are washed, dried in shade, and ground to a fine powder using a mill. In the reflux method, the ground powder is extracted using a Soxhlet extractor for three hours, with the extracts being filtered and concentrated using a rotary evaporator under a vacuum. In the ultrasonic bath extraction method, samples are extracted with 70% methanol using an ultrasonic bath at 64 °C for 2 h. See also Black raspberry List of ineffective cancer treatments References External links coreanus Flora of Eastern Asia Flora of China Berries Korean fruit Plants described in 1867 Taxa named by Friedrich Anton Wilhelm Miquel