which the alkyl group contains 8 to 10 carbon atoms and having an average degree of polymerization of 1 7 2 apg u00ae 425 surfactant an alkyl polyglycoside in which the alkyl group contains 8 to 16 carbon atoms and having an average degree of polymerization of 1 6 3 apg u00ae 625 surfactant an alkyl polyglycoside in which the alkyl groups contains 12 to 16 carbon atoms and having an average degree of polymerization of 1 6 4 apg u00ae 325 surfactant an alkyl polyglycoside in which the alkyl groups contains 9 to 11 carbon atoms and having an average degree of polymerization of 1 6 5 glucopon u00ae 600 surfactant an alkyl polyglycoside in which the alkyl groups contains 12 to 16 carbon atoms and having an average degree of polymerization of 1 4 6 plantaren u00ae 2000 surfactant a c 8 16 alkyl polyglycoside in which the alkyl group contains 8 to 16 carbon atoms and having an average degree of polymerization of 1 4 7 plantaren u00ae 1300 surfactant a c 12 16 alkyl polyglycoside in which the alkyl groups contains 12 to 16 carbon atoms and having an average degree of polymerization of 1 6 8 glucopon u00ae 220 surfactant an alkyl polyglycoside in which the alkyl group contains 8 to 10 carbon atoms and having an average degree of polymerization of 1 5 other examples include alkyl polyglycoside surfactant compositions which are comprised of mixtures of compounds of formula i wherein z represents a moiety derived from a reducing saccharide containing 5 or 6 carbon atoms a is a number having a.