Open AccessSupercritical CO2 extraction of oils from red grape varieties: Yields and extraction parameters
Author(s) -
Marko Malićanin,
Jelena Milanović,
Irena Žižović,
Jasna Ivanović,
Stoja Milovanović,
Vesna Rakić
Publication year - 2021
Publication title -
facta universitatis. series: physics, chemistry and technology
Language(s) - English
Resource type - Journals
eISSN - 2406-0879
pISSN - 0354-4656
DOI - 10.2298/fupct2101045m
Subject(s) - supercritical carbon dioxide , supercritical fluid , extraction (chemistry) , mass transfer , supercritical fluid extraction , chemistry , carbon dioxide , horticulture , botany , mathematics , chromatography , biology , organic chemistry
In this work, the extraction by supercritical carbon dioxide of grapeseed oil from five red grape varieties was investigated. Apart from an indigenous variety Prokupac, as the domestic, and Merlot and Cabernet Sauvignon, as international grape varieties the most represented in the Republic of Serbia, Pinot Noir and Gamay were studied as well. Extraction conditions were: temperature of 50?C, 250 bar pressure, and 0.3 kg/h flow rate of CO2. It was shown that the extraction kinetics of international grape varieties, mutually similar differ significantly from the domestic one. The obtained oil yields were in the range of 8.3% w/w (Gamay) to 10.4% w/w (Pinot Noir) for the international varieties and 5.0% w/w for the domestic variety. The mathematical model ?Sovova? was applied to define transport parameters regulating the oil mass transfer inside the seed particles and determine the agreement between experimental and model curves. The interpretation of results took into account the differences of grade seed morphologies (outer surfaces and inner layers) which was investigated by SEM analysis.