Previous studies have reported that lipase activities are usually
membrane-associated and that they can be found in oil body,
glyoxysome, or microsomal fraction of seed extracts, depending
upon the species [17,29]. In fact, lipase localization studies carried
out on oil palm mesocarp [31] demonstrated that the enzyme is
bound to the oil bodies, in agreement with previous data concerning
the association of lipase activity with the lipid layer of oil
palm extract [28]. Also, it was demonstrated that castor bean acid
lipase is associated with the oil body membrane [35] and its catalytic
properties are similar to that of lipases from mammals, fungi
and other plant species [34,36]. The present research evidences, for
the first time, an oil body-associated lipase activity in the olive fruit
mesocarp confirming the data of Olìas et al. [32] which showed that
olive crude extracts were able to hydrolyze olive TAGs and soybean
phospholipids. Such finding extend the knowledge concerning
lipolysis in oil rich fruits.
 
Previous studies have reported that lipase activities are usuallymembrane-associated and that they can be found in oil body,glyoxysome, or microsomal fraction of seed extracts, dependingupon the species [17,29]. In fact, lipase localization studies carriedout on oil palm mesocarp [31] demonstrated that the enzyme isbound to the oil bodies, in agreement with previous data concerningthe association of lipase activity with the lipid layer of oilpalm extract [28]. Also, it was demonstrated that castor bean acidlipase is associated with the oil body membrane [35] and its catalyticproperties are similar to that of lipases from mammals, fungiand other plant species [34,36]. The present research evidences, forthe first time, an oil body-associated lipase activity in the olive fruitmesocarp confirming the data of Olìas et al. [32] which showed thatolive crude extracts were able to hydrolyze olive TAGs and soybeanphospholipids. Such finding extend the knowledge concerninglipolysis in oil rich fruits.
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