1 Ocak 2009 Dergi makalesi Açık Erişim

Sahin, Ozlem; Erdemir, Serkan; Uyanik, Arzu; Yilmaz, Mustafa

Citation Style Language JSON

{
  "DOI": "10.1016/j.apcata.2009.08.030", 
  "abstract": "Lipases are enzymes that catalyses a variety of reactions, such esterifications, interesterification and hydrolysis. Several methods have been reported for the immobilization of lipases, such as deposition onto solid supports, covalent binding and encapsulation within a polymer matrix or silica glasses obtained by sol-gel techniques. In this study, the Candido rugosa lipase was encapsulated within a chemically inert sol-gel support prepared by polycondensation by tetraetoxysilane (TEOS)and octyltrietoxysilane(OTES) in the presence and absence of calix[n]arene, calix[n]-NH2 and calix[n]-COOH (n = 4,6,8) compounds as additives. The catalytic activity of the encapsulated lipases was evaluated into model reactions, i.e. the hydrolysis of p-nitrophenylpalmitate (p-NPP), and the enantioselective hydrolysis of rasemic Naproxen methyl ester that was studied in aqueous buffer solution/isooctane reaction system. The results indicated that the particularly calix[4,6]-NH2 and calix[6]-COOH based encapsulated lipases had higher conversion and enantioselectivity compared to the sol-gel free lipase. (C) 2009 Elsevier B.V. All rights reserved.", 
  "author": [
    {
      "family": "Sahin", 
      "given": " Ozlem"
    }, 
    {
      "family": "Erdemir", 
      "given": " Serkan"
    }, 
    {
      "family": "Uyanik", 
      "given": " Arzu"
    }, 
    {
      "family": "Yilmaz", 
      "given": " Mustafa"
    }
  ], 
  "container_title": "APPLIED CATALYSIS A-GENERAL", 
  "id": "39899", 
  "issue": "1-2", 
  "issued": {
    "date-parts": [
      [
        2009, 
        1, 
        1
      ]
    ]
  }, 
  "page": "36-41", 
  "title": "Enantioselective hydrolysis of (R/S)-Naproxen methyl ester with sol-gel encapculated lipase in presence of calix[n]arene derivatives", 
  "type": "article-journal", 
  "volume": "369"
}