{"id":17803,"date":"2015-04-03T12:06:08","date_gmt":"2015-04-03T09:06:08","guid":{"rendered":"http:\/\/balarisi.org\/?p=17803"},"modified":"2015-04-09T14:49:40","modified_gmt":"2015-04-09T11:49:40","slug":"balda-depolama-sirasinda-esmerlesme-reaksiyonu-kinetiginin-belirlenmesi","status":"publish","type":"post","link":"https:\/\/www.beyazkovan.com\/?p=17803","title":{"rendered":"Balda depolama s\u0131ras\u0131nda esmerle\u015fme reaksiyonu kineti\u011finin belirlenmesi"},"content":{"rendered":"

Latife Bulut<\/strong>
\nY\u00fcksek Lisans Tezi, \u0130stanbul Teknik \u00dcniversitesi \/ Fen Bilimleri Enstit\u00fcs\u00fc \/ G\u0131da M\u00fchendisli\u011fi Anabilim Dal\u0131, 2007, 65 s.
\nTEZ NO: 222843<\/strong>
\nSorgu Penceresine TEZ NO’yu yazarak Ayr\u0131nt\u0131l\u0131 Bilgi ve PDF d\u00f6k\u00fcmana ula\u015fmak i\u00e7in t\u0131klay\u0131n\u0131z <\/a><\/span><\/p>\n

\u00d6ZET
\n<\/strong> Balda esmerlesme reaksiyonu depolama s\u0131ras\u0131nda s\u0131cakl\u0131ga bagl\u0131 olarak meydanagelmekte, hidroksimetilfurfural (HMF) konsantrasyonu y\u00fckselerek ve renk degiserek\u00fcr\u00fcn\u00fcn kalitesinin d\u00fcsmesine sebep olmaktad\u0131r. Bal\u0131n depoland\u0131g\u0131 s\u0131cakl\u0131klar cams\u0131l\u0131gage\u00e7is s\u0131cakl\u0131g\u0131 (Tg) ile bu s\u0131cakl\u0131g\u0131n 100\u00b0C \u00fczerindeki s\u0131cakl\u0131k aral\u0131g\u0131nda oldugundankalite degisimleri incelenirken Tg\u2019n\u0131n etkisi incelenmelidir. Bu \u00e7al\u0131smada, bal\u0131n Tgdegeri nem i\u00e7erigi %15-22 aral\u0131g\u0131nda ayarlanarak degistirilmistir. Elde edilen bal\u00f6rnekleri, bal\u0131n Tg ile bunun 100\u00b0C \u00fczerindeki s\u0131cakl\u0131k aral\u0131g\u0131ndaki farkl\u0131 s\u0131cakl\u0131klarda(20-60\u00b0C) on g\u00fcn depolanarak esmerlesme reaksiyonu HMF konsantrasyonu ve renkdegerleri \u00f6l\u00e7\u00fclerek izlenmistir. Esmerlesme reaksiyonunun kinetigi HMFkonsantrasyonu ve toplam renk degisimi degerleri kullan\u0131larak belirlenmistir. Bal\u00f6rneklerindeki HMF konsantrasyonu ve toplam renk degisimi degeri depolamas\u00fcresinde dogrusal olarak artm\u0131st\u0131r. Bal\u0131n nem i\u00e7erigi artt\u0131k\u00e7a reaksiyon h\u0131z\u0131n\u0131n artt\u0131g\u0131g\u00f6zlenmistir. Bu degisim y\u00fcksek nem i\u00e7eriginde d\u00fcs\u00fck viskoziteye bagl\u0131 olarak molek\u00fclhareketliliginin artmas\u0131ndan kaynaklanm\u0131st\u0131r. HMF konsantrasyonu belirli birdepolama s\u0131cakl\u0131g\u0131na kadar (~40-46\u00b0C) d\u00fcs\u00fck h\u0131zda artm\u0131s ve bu s\u0131cakl\u0131ktan sonra art\u0131sh\u0131z\u0131 y\u00fckselmistir. Toplam renk degeri degisimi s\u0131cakl\u0131k art\u0131s\u0131 ile s\u00fcrekli olarak art\u0131sg\u00f6stermistir. Toplam renk degisiminin h\u0131z sabiti degerleri i\u00e7in Arrhenius ve WLFesitliklerinin her ikisinin de uygun oldugu bulunmustur. HMF h\u0131z sabiti degerleris\u0131cakl\u0131ga g\u00f6re iki farkl\u0131 b\u00f6lgeye ayr\u0131ld\u0131g\u0131 i\u00e7in iki esitlik te t\u00fcm s\u0131cakl\u0131k aral\u0131g\u0131nauygulanamam\u0131st\u0131r. Bu esitliklerin yerine literat\u00fcrde tavsiye edilen log-lojistik esitligininHMF h\u0131z sabiti degerlerine uygun oldugu saptanm\u0131st\u0131r. Ancak elde edilen esitliklerindogrulanmas\u0131 ve pratikte kullan\u0131labilmesi i\u00e7in farkl\u0131 ballarda daha uzun s\u00fcrelidepolama \u00e7al\u0131smalar\u0131n\u0131n yap\u0131lmas\u0131na ihtiya\u00e7 vard\u0131r.
\nAnahtar Kelimeler: <\/strong>Bal, Depolama, Hidroksimetilfurfural, Esmerlesme reaksiyonu,Kinetik modelleme<\/p>\n","protected":false},"excerpt":{"rendered":"

Latife Bulut Y\u00fcksek Lisans Tezi, \u0130stanbul Teknik \u00dcniversitesi \/ Fen Bilimleri Enstit\u00fcs\u00fc \/ G\u0131da M\u00fchendisli\u011fi Anabilim Dal\u0131, 2007, 65 s. TEZ NO: 222843<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[37],"tags":[],"class_list":["post-17803","post","type-post","status-publish","format-standard","","category-yuksek-lisans-tezleri","yazarlar-latife-bulut","anahtarkelimeler-bal","anahtarkelimeler-bal-analizi","anahtarkelimeler-bal-depolama","anahtarkelimeler-bal-kalitesinin-tesbiti","anahtarkelimeler-hmf"],"_links":{"self":[{"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/posts\/17803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17803"}],"version-history":[{"count":1,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/posts\/17803\/revisions"}],"predecessor-version":[{"id":17804,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=\/wp\/v2\/posts\/17803\/revisions\/17804"}],"wp:attachment":[{"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.beyazkovan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}