NOVELTY - Extracting target compounds from a biomass, comprises: drying a biomass; milling the dried biomass to create fines; agglomerating the fines to create agglomerated particles; and percolating a solvent through the agglomerated particles.    USE - The methods are useful for extracting target compounds from a biomass; for generating a prill; for agglomerating dried and ground biomass from a suspension culture; and for extracting one or more target compounds from biomass from a suspension culture (all claimed).    ADVANTAGE - The methods and compositions can be efficiently used for leaching or extracting agglomerated cultures for increased recovery of biomass or target compounds from the microorganisms.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) a prill composition formed of microbial biomass comprising: a set of agglomerated fines that each retain a majority of their surface area and are less than 300 microns; and a neutral substrate;    (2) a method for generating a prill comprising: obtaining a microbial biomass from a suspension culture; drying the microbial biomass until the biomass is at least 90% dry mass; milling the dry microbial biomass to create particles; and agglomerating the particles to generate agglomerated particles of 300 microns or greater while retaining a majority of the surface area of the particles to form the microbial prill;    (3) a method for agglomerating dried and ground biomass from a suspension culture comprising, rolling at least partially dried biomass in an apparatus with a neutral substrate, optionally, where the a neutral substrate is administered to the biomass drop wise, and forming a clot or clump of biomass particles and thus agglomerating the biomass to form agglomerated particles;    (4) a process for extracting one or more target compounds from biomass from a suspension culture, comprising applying agglomerated particles to a separation device and extracting a target compound from the agglomerated suspension culture;    (5) an apparatus for agglomerating a suspension culture comprising a vessel capable of receiving water or other agent, the vessel capable of moving in at least one direction and a support or housing device attached to the vessel to permit moving from one location to another;    (6) a device for assessing compressive strength of an algal prill comprising an agglomerate test device having at least one retention screen layer and a drain where the device is capable of assessing compressive strength of the algal prill; and    (7) a kit comprising the prill composition of microbial biomass comprising: a set of agglomerated particles of the microbial biomass where about 50 percent or more of the agglomerated particles are about 300 microns or greater, and a neutral substrate.