Solvent Extraction: Kinetic Study of Major and Minor Compounds

被引：60
作者：
Bauemler, Erica R. [1 ]
Crapiste, Guillermo H. [1 ]
Carelli, Amalia A. [1 ]
机构：
[1] Univ Nacl Sur Consejo Nacl Invest Cient & Tecn, Planta Piloto Ingn Quim PLAPIQUI, RA-8000 Bahia Blanca, Buenos Aires, Argentina
来源：
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 2010年 / 87卷 / 12期
关键词：
Effective diffusion coefficients; Extraction; Sunflower; Hexane extraction; Minor compounds; Tocopherols; Phospholipids; OIL EXTRACTION; VEGETABLE OIL;
D O I：
10.1007/s11746-010-1637-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The effects of temperature and contact time on lipid extraction from sunflower collets was investigated in a batch extractor with hexane as solvent. The total removed material varied in quantity and composition due to changes in temperature and contact time. Higher temperatures enhanced oil extraction as well as increased the tocopherol and phospholipid contents of the oil. The kinetic data for triglycerols, phospholipid and tocopherols extraction were interpreted by using an equation that considers extraction as the sum of two components: diffusion and washing. Effective diffusion coefficients for oil, tocopherols and phospholipid at different temperatures were determined. Control of temperature and contact time are essential to obtain good quality oil and reduce refining costs. Extraction at 60 degrees C and short contact times (30 min) obtained high oil yield (98%) accompanied by significant tocopherol extraction (>99%) and reduced phospholipid extraction (66%).
引用
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页码：1489 / 1495
页数：7
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