Abstract: Disclosed herein are inventive stable homogenized biomass hetero-colloids, their production and uses. Such biomass hetero-colloids comprise biomass derived solid particle colloid matter and at least 15% (w/w) biomass derived soluble colloid matter. The novel biomass hetero-colloids provide an inventive approach for the application of biologically active compounds. Bio-actives are made available in an innovative form involving low intervention processing and enhancing the biological availability.

Abstract: For the production of rhamnolipids which can be used as surfactants, microorganism of the genus Pseudomonas are cultivated in a aqueous medium suitable for the growth of the microorganisms under growth conditions; in this process the microorganisms are cultivated in a continuous submerged culture under aerobic conditions, with a continuous supply of fresh culture medium and with continuous removal of a culture solution and microbial cells (biomass); the culture medium has a composition suitable for limiting growth by means of at least two-fold limitation of essential growth substances; a solution of the rhamnolipids produced as metabolite of the microorganisms is separated from the culture broth. For this purpose a continuously operated bioreactor (11) is suitable.