TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst is prepared by contacting at least one structuring agent, at least one silicon source, at least one zinc source and optionally a base. The catalyst is prepared by: (a) dissolving the structuring agent in a solvent, preferably in water; (b) adding a base, followed by the addition of silicon source to the structuring solution obtained in the step (a); (c) adding zinc source dissolved in a solvent, preferably in water; (d) obtaining synthesized crude oil; (e) washing the synthesized crude oil; (f) drying and calcinating. The catalyst is prepared by: dissolving the base and silicon source in a solvent, preferably water; adding zinc source to the obtained solution; adding the structuring agent; obtaining synthesized crude oil; washing the synthesized crude oil; and drying and calcinating. The solid mesostructured has a Brunauer, Emmett and Teller surface area of greater than 150 (preferably greater than 200) m2/g. The molar ratio of the zinc to the silicon in the solid mesostructured is 0.01-0.5. The solid mesostructured is mesoporous chromium type and/or Santa Barbara amorphous type. The mesostructured catalyst is used in the presence of a binder including alumina, silica or clay.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The temperature for obtaining the synthesized crude oil step is 70-150 degrees C, preferably 80-120 degrees C. The drying and calcinating steps are carried out in two steps, where the primary step comprises increasing the temperature under nitrogen, then the second step in air. The process is carried out at 130-220 degrees C, under a pressure of less than 100 bar with an excess of monoalcohol compared to the stoichiometry fat/alcohol. The reaction is carried out continuously in a fixed bed or with autoclaves and sedimentation tank. The reaction is carried out in fixed bed, under a pressure of 10-70 bar and volume density of hepatocytes of 0.1-3, where a weight ratio of alcohol to fatty body is 3/1 to 0.1/1. The process is operated in two steps by adjusting the level of conversion for obtaining fuel ester having a content of monoglyceride of greater than 0.8 wt.%, diglyceride of greater than 0.2 wt.%, triglyceride of greater than 0.2 wt.%, glycerin of at least 0.25 wt.%, and a glycerin with a purity of 95-99.5%, preferably 98-99.9%. Preferred Components: The aliphatic monoalcohol comprises 1-12 carbon atoms. The oil is palm oil, soybean, palm kernel oil, coconut oil, babassu, old or new rapeseed oil, classic or oleic sunflower, corn oil, cotton oil, peanut oil, Jatrophaoil, castor oil, flax and crambe oil, seaweed oil, sunflower oil and rapeseed oil produced by genetic modification or by hybridization, oils partially modified by polymerization or by oligomerization, cooking oil, fish oil, seal oil, volatile fatty oil, tallow oil, lard oil, or fat obtained from the wastewater treatment. EXAMPLE - Cetyltrimethylammonium bromine surfactant (17.8 g) was dissolved in water (66 g) (3/4 of total) in a polypropylene bottle. Soda (1.62 g) and tetraethylorthosilicate (TEOS, 16.69 g) were added to the obtained solution, and dissolved gradually, to avoid evaporation of alcohol formed during hydrolysis of TEOS in silica. Zinc sulfate (0.48 g) was dissolved in water (22 g) and the obtained mixture was introduced into the reaction medium. Then, the vial containing the formed gel was placed in an oven at 100 degrees C for 72 hours and worked up to obtain solid mesoporous zirconia silica (MZS-1) catalyst. Rapeseed oil (25 g), methanol (25 g) and solid MZS-1 (1 g) were introduced in a reactor at ambient temperature. The reactor was then closed, agitated (300 revolutions per minute) and heated to 200 degrees C. The temperature of the reaction medium was stabilized to 200 degrees C after 40 minutes. After 2 hours of reaction, the agitation was stopped and the reactor was allowed to cool at room temperature and worked up to obtain the composition comprising triglyceride (15), diglyceride (15), monoglyceride (15), and methyl ester of vegetable oil (54).