Supercritical Assisted Atomization for the production of curcumin-biopolymer microspheres
Supercritical Assisted Atomization (SAA) has been applied to the formation of microspheres curcumin (CUR)-polyvinylpyrrolidone (PVP) to be used for biomedical applications. CUR has antioxidant, anti-inflammatory and antitumoral properties and is poorly water soluble; whereas, PVP is highly water sol...
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| Veröffentlicht in: | Powder technology 2017-01, Vol.305, p.455-461 |
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| creator | Adami, Renata Di Capua, Alessia Reverchon, Ernesto |
| description | Supercritical Assisted Atomization (SAA) has been applied to the formation of microspheres curcumin (CUR)-polyvinylpyrrolidone (PVP) to be used for biomedical applications. CUR has antioxidant, anti-inflammatory and antitumoral properties and is poorly water soluble; whereas, PVP is highly water soluble. The aim was to entrap CUR in form of nanoparticles in a polymeric hydrosoluble carrier, to protect the active principle and to enhance its bioavailability. Four CUR/PVP weight ratios were selected: 1/2, 1/4, 1/6 and 1/8 and processed by SAA at 80°C and 99bar in the saturator and 80°C and 1.50bar in the precipitator. Spherical particles of CUR/PVP were obtained in all cases, characterized by a mean size, calculated on particle number %, smaller than 400nm and a D90 lower than 1μm. X-ray, DSC, FTIR analyses showed that the microspheres were amorphous and that the drug was intimately mixed with the polymer. UV–vis spectrometric analyses confirmed an high loading efficiency of the active principles microspheres, ranging between 94 and 100%. Dissolution tests in aqueous environment at different pH values were performed to measure the improvement of the dissolution rate. It resulted up to 4.5 times faster with respect to the physical mixture for the most favorable 1/8 ratio, with a complete CUR dissolution time of 5.5h at pH6.5.
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| doi_str_mv | 10.1016/j.powtec.2016.10.020 |
| format | Article |
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[Display omitted]</description><subject>Antioxidants</subject><subject>Atomization</subject><subject>Atomizing</subject><subject>Bioavailability</subject><subject>Biomedical materials</subject><subject>Biopolymers</subject><subject>Curcumin</subject><subject>Dissolution</subject><subject>Inflammation</subject><subject>Microparticles</subject><subject>Microspheres</subject><subject>Nanodispersed</subject><subject>Nanoparticles</subject><subject>pH effects</subject><subject>Polyvinylpyrrolidone</subject><subject>PVP</subject><subject>Spectrometry</subject><subject>Studies</subject><subject>Supercritical</subject><subject>Supercritical processes</subject><issn>0032-5910</issn><issn>1873-328X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9UE1LxDAQDaLguvoPPBQ8t06Sfl6EZfELFjyooKfQphM2ZdvUJFXWX2_WevY0zJv3Zt48Qi4pJBRoft0lo_nyKBMWugAlwOCILGhZ8Jiz8u2YLAA4i7OKwik5c64DgJxTWJD352lEK632Wta7aOWcdh7baOVNr79rr80QKWMjv8VotKad5C9kVCQnK6deD3GjzWh2-x5t1GtpjRu3aNGdkxNV7xxe_NUleb27fVk_xJun-8f1ahPLFMDHMlM5LznNyrJIacOrinFQrKpzmTVli5wyiiVtc2xYoSTyPE2LrFFhAqyCii_J1bw32PuY0HnRmckO4aSgVVpAwRmngZXOrINBZ1GJ0eq-tntBQRxCFJ2YQxSHEA9oCDHIbmYZhg8-NVrhpMZBYqstSi9ao_9f8ANlQ33h</recordid><startdate>201701</startdate><enddate>201701</enddate><creator>Adami, Renata</creator><creator>Di Capua, Alessia</creator><creator>Reverchon, Ernesto</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7ST</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>JG9</scope><scope>SOI</scope></search><sort><creationdate>201701</creationdate><title>Supercritical Assisted Atomization for the production of curcumin-biopolymer microspheres</title><author>Adami, Renata ; Di Capua, Alessia ; Reverchon, Ernesto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-c5f63831588741b399230f29a6c5b8de3121e81d6eb27fce364475bfde3029093</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Antioxidants</topic><topic>Atomization</topic><topic>Atomizing</topic><topic>Bioavailability</topic><topic>Biomedical materials</topic><topic>Biopolymers</topic><topic>Curcumin</topic><topic>Dissolution</topic><topic>Inflammation</topic><topic>Microparticles</topic><topic>Microspheres</topic><topic>Nanodispersed</topic><topic>Nanoparticles</topic><topic>pH effects</topic><topic>Polyvinylpyrrolidone</topic><topic>PVP</topic><topic>Spectrometry</topic><topic>Studies</topic><topic>Supercritical</topic><topic>Supercritical processes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Adami, Renata</creatorcontrib><creatorcontrib>Di Capua, Alessia</creatorcontrib><creatorcontrib>Reverchon, Ernesto</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Materials Research Database</collection><collection>Environment Abstracts</collection><jtitle>Powder technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Adami, Renata</au><au>Di Capua, Alessia</au><au>Reverchon, Ernesto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Supercritical Assisted Atomization for the production of curcumin-biopolymer microspheres</atitle><jtitle>Powder technology</jtitle><date>2017-01</date><risdate>2017</risdate><volume>305</volume><spage>455</spage><epage>461</epage><pages>455-461</pages><issn>0032-5910</issn><eissn>1873-328X</eissn><abstract>Supercritical Assisted Atomization (SAA) has been applied to the formation of microspheres curcumin (CUR)-polyvinylpyrrolidone (PVP) to be used for biomedical applications. CUR has antioxidant, anti-inflammatory and antitumoral properties and is poorly water soluble; whereas, PVP is highly water soluble. The aim was to entrap CUR in form of nanoparticles in a polymeric hydrosoluble carrier, to protect the active principle and to enhance its bioavailability. Four CUR/PVP weight ratios were selected: 1/2, 1/4, 1/6 and 1/8 and processed by SAA at 80°C and 99bar in the saturator and 80°C and 1.50bar in the precipitator. Spherical particles of CUR/PVP were obtained in all cases, characterized by a mean size, calculated on particle number %, smaller than 400nm and a D90 lower than 1μm. X-ray, DSC, FTIR analyses showed that the microspheres were amorphous and that the drug was intimately mixed with the polymer. UV–vis spectrometric analyses confirmed an high loading efficiency of the active principles microspheres, ranging between 94 and 100%. Dissolution tests in aqueous environment at different pH values were performed to measure the improvement of the dissolution rate. It resulted up to 4.5 times faster with respect to the physical mixture for the most favorable 1/8 ratio, with a complete CUR dissolution time of 5.5h at pH6.5.
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| source | Elsevier ScienceDirect Journals |
| subjects | Antioxidants Atomization Atomizing Bioavailability Biomedical materials Biopolymers Curcumin Dissolution Inflammation Microparticles Microspheres Nanodispersed Nanoparticles pH effects Polyvinylpyrrolidone PVP Spectrometry Studies Supercritical Supercritical processes |
| title | Supercritical Assisted Atomization for the production of curcumin-biopolymer microspheres |
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