Abstract: The present invention relates to the field of production of novel biosurfactants. More specifically, the present invention relates to the efficient generation of short chained on-glycosides with less than 10%, preferably less than 1%, ?-1 glycosides using a fungal strain such as the yeast Starmerella bombicola having a dysfunctional CYP52M1 cytochrome P450 monooxygenase and a dysfunctional FAO1 fatty alcohol oxidase to produce high amounts of so-called unsaturated (symmetrical) ?,?-bola glycosides free from contaminating ?,?-1 bola glycosides, and subjecting said unsaturated (symmetrical) ?,?-bola glycosides to conditions inducing the breaking of the present double bond(s) such as for example through ozonolysis performed in water. More specifically, the present invention discloses the generation of (acetylated) C9:0 ?-sophoroside aldehydes, C9:0 ?-glucoside aldehydes, C9:0 ?-glucolipids, C9:0 ?-sophorolipids, C9:0 ?-sophoroside alcohols and C9:0 ?-glucoside alcohols and their further derivatives.

Abstract: The present invention relates to the field of microbial production of novel biosurfactants. More specifically, the present invention discloses the usage of a fungal strain such as the yeast Starmerellabombicola having a dysfunctional CYP52M1 cytochrome P450 monooxygenase and a dysfunctional FAO1 fatty alcohol oxidase for producing high amounts of so-called “symmetrical bolaform sophorosides” where both sophorose moieties are attached through a terminal glycosidic linkage to the hydrophobic linker. In addition, the present invention further discloses that the latter yeast can also be used to produce alkyl sophorosides and symmetrical bolaform glucosides.

Abstract: This disclosure relates to the field of the microbial production of specific types of glycolipids that are potentially useful as replacements for petroleum-based detergents and emulsifiers. This disclosure, more specifically, discloses the usage of yeasts having a dysfunctional acetyltransferase for producing high amounts of bolaamphiphilic glycolipids when using conventional and cheap substrates. Furthermore, the disclosure relates to yeasts having a dysfunctional acetyltransferase optionally combined with a dysfunctional lactonase and/or second glucosyltransferase. The latter microorganisms are capable of producing high amounts of bolaamphiphilic sophorolipids.

Abstract: Described is an enzyme derived from Candida bombicola that is capable of lactonizing or polymerizing carbohydrate-containing compounds, lipids, fatty acids, hydroxylated fatty acids, alcohols, dicarboxylic acids or mixtures thereof. Hence, host cells comprising the enzyme can be used, via the formation of intra- or inter-molecular ester-bounds, to produce, for example, lactonized sophorolipids or polymers of acidic sophorolipids. Also described is that host cells having lost their capability to produce a functional enzyme disclosed herein can be used to produce 100% acidic sophorolipids.

Abstract: The present disclosure relates to an enzyme derived from Candida bombicola that is capable of lactonizing or polymerizing carbohydrate-containing compounds, lipids, fatty acids, hydroxylated fatty acids, alcohols, dicarboxylic acids or mixtures thereof. Hence, host cells comprising the latter enzyme can be used, via the formation of intra- or inter-molecular ester-bounds, to produce, for example, lactonized sophorolipids or polymers of acidic sophorolipids. On the other hand, host cells having lost their capability to produce a functional enzyme disclosed herein can be used to produce 100% acidic sophorolipids.

Abstract: This disclosure relates to the field of the microbial production of specific types of glycolipids that are potentially useful as replacements for petroleum-based detergents and emulsifiers. This disclosure, more specifically, discloses the usage of yeasts having a dysfunctional acetyltransferase for producing high amounts of bolaamphiphilic glycolipids when using conventional and cheap substrates. Furthermore, the disclosure relates to yeasts having a dysfunctional acetyltransferase optionally combined with a dysfunctional lactonase and/or second glucosyltransferase. The latter microorganisms are capable of producing high amounts of bolaamphiphilic sophorolipids.

Abstract: Described is an enzyme derived from Candida bombicola that is capable of lactonizing or polymerizing carbohydrate-containing compounds, lipids, fatty acids, hydroxylated fatty acids, alcohols, dicarboxylic acids or mixtures thereof. Hence, host cells comprising the enzyme can be used, via the formation of intra- or inter-molecular ester-bounds, to produce, for example, lactonized sophorolipids or polymers of acidic sophorolipids. Also described is that host cells having lost their capability to produce a functional enzyme disclosed herein can be used to produce 100% acidic sophorolipids.

Abstract: The present invention relates to yeast species which are normally capable of producing sophorolipids but which are modified in such way that they are incapable producing the latter compounds. These sophorolipid-negative strains surprisingly display equal growth characteristics and biomass formation as their wild type counterparts and are hence useful for the production of compounds such as recombinant proteins, glycolipids, polyhydroxyalkanoates and carotenoides. In addition, the present invention discloses two glucosyltransferase genes with key-functions in sophorolipid production.

Abstract: The present disclosure relates to an enzyme derived from Candida bombicola that is capable of lactonizing or polymerizing carbohydrate-containing compounds, lipids, fatty acids, hydroxylated fatty acids, alcohols, dicarboxylic acids or mixtures thereof. Hence, host cells comprising the latter enzyme can be used, via the formation of intra- or inter-molecular ester-bounds, to produce, for example, lactonized sophorolipids or polymers of acidic sophorolipids. On the other hand, host cells having lost their capability to produce a functional enzyme disclosed herein can be used to produce 100% acidic sophorolipids.