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An epitome on encapsulation of probiotics

Ramadevi S., Meenakshi S.

Archives of Materials Science and Engineering

2022

Vol. 116, nr 1

34--41

Purpose: Nanotechnology is one of the highly evolving fields of research having immense potential in various fields of healthcare sectors. The very advent of nanotechnology lies in its ability to serve as a targeted drug delivery system. The introduction of a new branch namely bionanotechnology has further expanded the scope, especially in the diagnostics and treatment of various diseases. Probiotics being a natural source with a plethora of beneficial properties have been investigated actively in recent days. Probiotics administered into the digestive system have been shown to promote gut health by increasing the microbial balance in the gut. However, the bioavailability of such administered probiotics remains a major concern. These probiotics are protected through microencapsulation techniques, which encapsulate them in small capsules. Several nanoparticles with varied dimensions, forms, surfaces and composites have recently been investigated for probiotic microencapsulation. This has been used for various therapeutic applications, such as drug delivery. This review gives an insight on various materials and strategies used for probiotic encapsulation. Design/methodology/approach: The main aim of this review is to give a perception of the different types of methods of probiotic encapsulation. Findings: This review implies the significance of probiotics and subsequent active release in the gastrointestinal system. Different sections of this review paper, on the other hand, may offer up new opportunities for comprehensive research in the field of microencapsulation for boosting probiotic viability and also talks about the various encapsulating materials that has been employed. Originality/value: This review emphasizes more perceptions about the ongoing and imminent techniques for encapsulating probiotics.

Otrzymywanie nanocząstek metali metodami biotechnologii

Sadowski Z., Maliszewska I. H.

Rudy i Metale Nieżelazne

2009

R. 54, nr 10

614-618

W artykule zostały przedstawione najnowsze osiągnięcia w zastosowaniu bionanotechnologii do otrzymywania nanocząstek metali. Szczególną uwagę poświęcono nanocząstkom srebra i złota oraz ich zastosowaniu. Nanocząstki metali, które są syntezowane przez mikroorganizmy, mogą być ulokowane wewnątrz, jak i na zewnątrz komórek tych mikroorganizmów. Do otrzymywania nanocząstek metali można także wykorzystać ekstrakty z liści wielu roślin i drzew. Obok głównej aplikacji nanocząstek metali w elektronice, znajdują one co raz to większe zastosowanie jako materiał antybakteryjny. Kompleksy nanocząstek metalu z lekami służą do monitorowania leku w organizmie człowieka.

An important part of work in bionanotechnology concerns the synthesis of metal nanoparticles. Biosynthesis of both silver and gold nanoparticles has been described. Many microorganisms produced metal nanoparticles ether intra- or extracellularly. Well-known example is magnetotactic bacteria which able to synthesize magnetite nanoparticles. Some bacteria are able to reduce of Ag+ or AuCl4 - ions and form silver and gold nanoparticles. Biosynthetic method employing also plant extracts for the reduction of metal ions in solutions. Biosynthesis of metal nanoparticles is a new eco-frendly and "green" method. Metal nanoparticles have found potential application in many fields of advanced technology and medicine. The direct interaction of gold nanoparticles with drag gives a possibility to monitoring a drag migration in the human body.