Spray-dried powders from berries extracts obtained upon several processing steps to improve the bioactive components content

GAGNETEN, MAITE; CORFIELD, ROCÍO; MATTSON, MILAGROS GÓMEZ; SOZZI, AGUSTINA; LEIVA, GRACIELA; SALVATORI, DANIELA; SCHEBOR, CAROLINA

POWDER TECHNOLOGY

ELSEVIER SCIENCE SA

Año: 2019 vol. 342 p. 1008 - 1015

0032-5910

This work aimed at developing powders rich in antioxidant compounds and pigments from three berries grown in argentine Patagonia: blackcurrant, raspberry and elderberry. Ultrasound-assisted extraction (UAE) was applied on the precipitates generated after juice production in order to improve bioactive compounds recovery. The best extracts (UAE 10 min for raspberry and blackcurrant, and 5 min for elderberry), obtained after 2?3 extraction cycles were mixed and spray-dried. The glass transition temperatures (43?50 °C), and the low water content (0.92?1.44%) and water activity values (