we can classify such substances as coconut milk (the liquid endosperm of the coconut), orange juice, tomato juice, grape juice, pineapple juice, sap from birch, banana puree and... as mixtures of compounds of vegetable origin. In practice these mixtures should be avoided in research since.
Addition of banana homogenate without active charcoal (0.0%) has an inhibitory effect on the growth.Active charcoal is able to adsorb toxic material in banana. When active charcoal and banana homogenate are added the inhibitory effect of banana homogenate disappears; this is due to the fact that active charcoal adsorbs (an) inhibiting substance(s) present in the banana.
sometimes undefined mixtures of substances like banana are added to induce growth; the addition of these mixtures is usual when the researcher does not know the nutritional and hormonal requirements. It can also provide some kinds of amino acids that is usually required in Orchid culture media.