2.3.
Extraction and purifi cation of mamey sapote
seed oil (MSSO)
The oil was extracted in a Soxhlet apparatus
using hexane. The extraction was performed during
periods of 6 hours from dehydrated and milled seeds
(with about 15% humidity) until the samples were
completely exhausted. The solvent was removed from
the resulting micelle in a rotary laboratory (Büchi
RE 111) at reduced pressure.
The lipid fraction was stored in a container pro-
tected from light under refrigerated conditions until
processing and/or analysis.
The obtained oil was purified by an adaptation
of the Wesson method (Mehlenbacher, 1970). In
this procedure, the oil was dissolved in petroleum
ether (1:5 mass/volume) and 1 mL of a 14% potas-
sium hydroxide solution was added to each gram of
oil, with vigorous agitation; subsequently, 50% ethyl
alcohol was added at 1:2.5 (mass/volume) based on
the mass of oil, with agitation and then resting, until
separation of the phases. The ether layer containing
the neutral oil was processed to recover the purified
oil. It was then stored under refrigeration (−5 °C) and
protected from light until processing and/or analysis.
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