Potential Use of Crude Oils from Spent Coffee Grounds or Olive Pomace for the Production of MLM-Type Structured Lipids Catalysed by Commercial Immobilised Rhizomucor miehei Lipase
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Data di Pubblicazione:
2019
Citazione:
Potential Use of Crude Oils from Spent Coffee Grounds or Olive Pomace for the Production of MLM-Type Structured Lipids Catalysed by Commercial Immobilised Rhizomucor miehei Lipase / S. Ferreira-Dias, D.A. Mota, J.C.B. Santos, M.C. Lisboa, G.C. Heinzl, A.S. Lima, L.C. Krause, C.M.F. Soares. ((Intervento presentato al 17. convegno European Federation for the Science and Technology of Lipids Congress and Expo tenutosi a Sevilla nel 2019.
Abstract:
Low calorie triacylglycerols (TAG) presenting medium-chain fatty acids (M) at positions
sn-1,3 and long-chain fatty acids (L) at position sn-2 are known as MLM. This study aims
at the production of MLM by acidolysis of crude oils extracted from spent coffee grounds
and olive pomace with medium-chain caprylic (C8:0) or capric (C10:0) acids, or by
interesterification of these oils with ethyl caprylate (C8EE) or ethyl caprate (C10EE), in
solvent-free media, catalysed by the commercial immobilized lipase from Rhizomucor
miehei (Lipozyme RM IM, Novozymes A/S, Denmark). Reactions were carried out in
solvent-free media with a substrate molar ratio TAG/M (or TAG/EE) of 1:2, 50 ºC and 5%
w/w enzyme content. The highest yields of new TAG from spent coffee grounds oil were
achieved after 7 h acidolysis, yielding 71.3% and 70.1% of new TAG containing C8:0 or
C10:0, respectively. With the olive pomace oil, the yields were lower: 57.8% and 61.6% of
new TAG containing C8:0 or C10:0, respectively. After 7h interesterification with spent
coffee grounds oil and C8EE or C10EE, 73.2 % and 70.3 %, of new TAG were observed,
respectively. With the olive pomace oil, after 7 h interesterification, the yields of new TAG
containing C8EE or C10EE were 48.8% and 55.4%, respectively. In addition, Lipozyme
RM IM showed high operational stability along 13 consecutive batches of 7 h duration
each. This strategy opens a new market to added value products based on crude oils
from spent coffee grounds or olive pomace.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
S. Ferreira-Dias, D.A. Mota, J.C.B. Santos, M.C. Lisboa, G.C. Heinzl, A.S. Lima, L.C. Krause, C.M.F. Soares
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