(FR2699928-A1)      A compsn. contains (a) 0.01-99.99 wt.% of an anionic and/or nonionic surfactant and (b) 99.99-0.01% of a glycolipid, as least partly as an ester.    The amts. are (a) 45-85% (50-65%), and (b) 15-55%. (a) The surfactant is an alkylaryl sulphonate as a Na or Ca salt or as a 2-8C amine, with 10-16C alkyl gps., 1-10 aryl gps. and 1-2 sulphonate gps., mono- or di-esters of Na sulphosuccinate reacted with 6-20C linear alcohols, Na alkyl- or alkenyl- sulphonates with 10-18C alk(en)yl gps., petroleum sulphonates or Na, Ca or NH4 lignosulphonates, polyethoxylated alkylphenols with 8-24 EO and 8-12C alkyl gps., polyoxyethylene alkylphenoxy-ethanol, polyethoxylated esters of 4-18C fatty acids with 4-12 EO, ethers of 4-18C fatty alcohols with 4-12 EO, mono- and polyoleates of polyethoxylated sorbitol with 4-8C EO. Pref. surfactants are Na dioctyl sulpho-succinate, petroleum sulphonates, isopropylamine dodecylbenzene sulphonate, and nonylphenol ethoxylates with 9 EO. The esters are prepd. from 1-18C (1-8C) alcohols. (b) The glycolipids are sophorolipids, rhamnolipids, glucose-lipids, trehalose lipids and cellobiose lipids, where the sophorolipids as esters are (partly) deacetylated and/or delactonised and the cellobiose lipids are (partly) deacetylated.    USE/ADVANTAGE -   The compsn. is used to clean media contaminated by hydrocarbons, esp. underground formations. Accessibility of the hydrocarbons to bacteria is improved, resulting in min. residual hydrocarbons in the polluted-medium.    (EP605308-B1)      A compsn. contains (a) 0.01-99.99 wt.% of an anionic and/or nonionic surfactant and (b) 99.99-0.01% of a glycolipid, as least partly as an ester.    The amts. are (a) 45-85% (50-65%), and (b) 15-55%. (a) The surfactant is an alkylaryl sulphonate as a Na or Ca salt or as a 2-8C amine, with 10-16C alkyl gps., 1-10 aryl gps. and 1-2 sulphonate gps., mono- or di-esters of Na sulphosuccinate reacted with 6-20C linear alcohols, Na alkyl- or alkenyl- sulphonates with 10-18C alk(en)yl gps., petroleum sulphonates or Na, Ca or NH4 lignosulphonates, polyethoxylated alkylphenols with 8-24 EO and 8-12C alkyl gps., polyoxyethylene alkylphenoxy-ethanol, polyethoxylated esters of 4-18C fatty acids with 4-12 EO, ethers of 4-18C fatty alcohols with 4-12 EO, mono- and polyoleates of polyethoxylated sorbitol with 4-8C EO. Pref. surfactants are Na dioctyl sulpho-succinate, petroleum sulphonates, isopropylamine dodecylbenzene sulphonate, and nonylphenol ethoxylates with 9 EO. The esters are prepd. from 1-18C (1-8C) alcohols. (b) The glycolipids are sophorolipids, rhamnolipids, glucose-lipids, trehalose lipids and cellobiose lipids, where the sophorolipids as esters are (partly) deacetylated and/or delactonised and the cellobiose lipids are (partly) deacetylated.    USE/ADVANTAGE -   The compsn. is used to clean media contaminated by hydrocarbons, esp. underground formations. Accessibility of the hydrocarbons to bacteria is improved, resulting in min. residual hydrocarbons in the polluted-medium.