Thesis On Microencapsulation

Thesis On Microencapsulation-28
Lipid coating for bypassing the nutrients of interest to the ruminant intestine has the advantage of using relatively low-cost food-grade materials compared to formulated polymeric coatings.

Lipid coating for bypassing the nutrients of interest to the ruminant intestine has the advantage of using relatively low-cost food-grade materials compared to formulated polymeric coatings.

Microspheres are matrix systems in which the core is uniformly dispersed and/or dissolved in a polymer network.

Microspheres may be homogeneous or heterogeneous depending, respectively, on whether the core is in the molecular state (dissolved) or in the form of particles (suspended).

His main area of interest is improving the nutritional value of feeds for ruminants.

His doctoral thesis was about the encapsulation of soybean meal with fats and its use in high-yielding dairy cows’ rations.

In designing a fat-coated product, an active ingredient is either embedded in a lipid matrix or prepared in small spheres, then coated with lipid material.

In general, coating fats consist of fatty acids with a melting point of ≥40 ºC and having at least 14 carbon atoms.The product obtained from this process is called microencapsulate, and it includes both microspheres and microcapsules.Microcapsules are particles consisting of an inner core containing the active substance, which is covered with a polymer layer constituting the capsule membrane. Alamouti, and Mohammad Hossein Azizi Numerous methodologies have been designed to increase the amount of a nutrient that passes through the rumen without degradation by the rumen microorganisms, thereby resulting in the delivery of a larger portion of that nutrient to the lower gastrointestinal tract.Some of these methods include heat and chemical treatment and polymeric compounds of amino acids.Materials to be chosen as a coating matrix should have these specific properties to protect the core nutrient/feed from ruminal degradation: .The capsules must be sufficiently dense to ensure that they do not remain floating at the top layer of the rumen contents for an unlimited time.Centrifugal suspension separation is extensively used for coating of particles with a thin shell of fat or wax.In this technique, the particles are suspended in a melted shell material and poured onto a spinning disk.Contrastingly, the disadvantages of this protection method include low payloads of the active material and its limited post-ruminal release and absorption.The latter is generally inversely related to the degree of rumen protection.

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