Some of the commonly used fungal lipases for biodiesel production.
Enzyme | Immobilized on | Substrate | Acyl acceptor | Yield | Reference |
---|---|---|---|---|---|
Candida antartica Lipase | Activated textile cloth | Waste cooking oil | Methanol | 91.08% | [157] |
Polyurethane foam | Soybean oil | Ethanol | 81% | [158] | |
Acrylic resin | Sunflower oil | Ethyl acetate | 92.7% | [78] | |
Soybean oil | Methanol | 83.31% | [95] | ||
Candida rugosa Lipase | Microporous bio silica-polymer | Scenedesmus quadricauda microalgal oil | Methanol | 96.4% | [59] |
Poly(styrenemethacrylic acid) microsphere | Soybean oil | Methanol | 86% | [159] | |
within an activated carbon as support | Palm oil | Methanol | 70% | [160] | |
Thermomyces lanuginosus Lipase | Olive pomace | Pomace oil | Methanol | 93% | [161] |
Phyllosilicate sol-gel matrix | Grease | Ethanol | 80-90% | [162] | |
Mesoporous polyhydroxybutyrate particles (PHB) | Oleic acid | Methanol and Ethanol | 90% | [163] | |
Toyopearl AF-amino-650M resin | Babassu oil | Ethanol | 86.6% | [164] |
Table 1.3 Some examples commercial lipases commonly used for biodiesel production.
Enzyme | Substrate | Acyl acceptor | Reaction yield | Reference |
---|---|---|---|---|
Novozyme 435 | Chlorella sp. KR-1 | Dimethyl carbonate and methanol mixture | 90% | [145] |
Sunflower oil | Methanol, Absolute ethanol, 1-propanol | >90% | [146] | |
Oleic acid | Ethanol, n-propanol, and n-butanol | >90% | [147] | |
Crude soybean oil | Methanol | 94% | [148] | |
Soybean oil | Ethyl acetate | 63.3 % | [149] | |
Soybean oil | Ethanol | [150] | ||
Lipozyme TL IM | Soybean oil | Methanol | >90% | [151] |
Crude palm oil | Methanol | 96.15% | [90] | |
Waste cooking oil | Methanol | 92.8% | [152] | |
Palm oil | Oleyl alcohol | 79.54% | [153] | |
Corn oil | Methanol | 92% | [154] | |
Lipozyme RM IM | Crude rapeseed oil | Monoacylglycerol | 90% | [155] |
Sunflower oil | Methanol | >80% | [82] | |
Castor oil | Ethanol | 98% | [3] | |
Soybean oil deodorizer distillate | Ethanol | >88% | [156] |
Extracellular lipases are separated from broth containing lipase producing cells and after purification used as a catalyst in biodiesel production processes [55]. The way to purify extracellular lipases depends upon its structure and source organism [80]. Mostly extracellular lipases are used in the immobilized form for transesterification than as free lipases because of the low conversion rate and costly process [11]. Literature is full of different methods as well as materials used for immobilization of extracellular lipases. Main methods for immobilization involve cross linking, carrier binding and entrapment while the most commonly used materials for immobilization include silica, magnetic particles, and nanofibers or nanoparticles for carrier binding, alginate beads, gels, and silicon polymers for entrapment and glutaraldehyde for cross-linking [47]. The use of a suitable solvent in case of extracellular lipase