Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2011-3-29
pubmed:abstractText
The present work was designed to produce an Ilex paraguariensis spray-dried powder (SDP), in semi-industrial scale, in order to characterize its technological and chemical properties as well as to evaluate the thermal stability and photostability of the main polyphenol constituents. The yield of the spray-drying process was satisfactory (67%). The resulting SDP showed to be a material presenting spherical particles with a mean size of 19.6??m, smooth surface, and good flow properties. The four polyphenol compounds previously reported for the species--neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, and rutin--were identified. Regarding the photostability test, the polyphenols present in the SDP proved to be stable against ultraviolet C radiation for 48 hours, independently of the packaging material. In the thermal stability test, the polyphenols were demonstrated to be hygroscopic and responsive to temperature (40°C) under an atmosphere of high relative humidity (75%) for 4 months, especially when the SDP was conditioned in permeable flasks. These findings demonstrate that heat and residual moisture content play an important role in the stability of the polyphenols and reinforce the relevance of conditioning SDP in humid tight packages under low temperatures.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-10995278, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-11677016, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-11704961, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-15161234, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-17016866, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-17693182, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-18193460, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-7312988, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-7775986, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-8688185, http://linkedlifedata.com/resource/pubmed/commentcorrection/21370969-8910695
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1557-7600
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
413-9
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Technological characterization and stability of Ilex paraguariensis St. Hil. Aquifoliaceae (Maté) spray-dried powder.
pubmed:affiliation
Postgraduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't