Production of trehalose from starch by thermostable enzymes from Sulfolobus acidocaldarius

The optimum conditions for the production of trehalose from starch were investigated using two thermostable enzymes, maltooligosyl trehalose synthase (MTSase) and maltooligosyl trehalose trehalohydrolase (MTHase), from Sulfolobus acidocaldarius ATCC 33909. The optimum pH was 5.5 and the optimum temp...

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Published inDie Stärke Vol. 49; no. 1
Main Authors Mukai, K, Tabuchi, A, Nakada, T, Shibuya, T, Chaen, H, Fukuda, S, Kurimoto, M, Tsujisaka, Y. (Hayashibara Biochemical Laboratories Inc., Okayama (Japan), Hayashibara Inst. Corp., Okayama (Japan)
Format Journal Article
LanguageEnglish
Published 1997
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Summary:The optimum conditions for the production of trehalose from starch were investigated using two thermostable enzymes, maltooligosyl trehalose synthase (MTSase) and maltooligosyl trehalose trehalohydrolase (MTHase), from Sulfolobus acidocaldarius ATCC 33909. The optimum pH was 5.5 and the optimum temperature was 55-57 degrees Celsius using isoamylase from Pseudomonas amyloderamosa as a debranching enzyme. The addition of CGTase to the reaction mixture during the saccharification process caused an increase in trehalose and a decrease in maltose and maltotriose. Isoamylase was better than pullulanase as a debranching enzyme. The yield of trehalose was independent of the type of starch used. Under optimum conditions, the yield of trehalose from corn starch at 30 % concentration was more than 82 %. Die optimalen Bedingungen fuer die Herstellung von Trehalose aus Staerke wurden unter Verwendung von zwei thermostabilen Enzymen, Maltooligosyl-Trehalose-Synthase (MTSase) und Maltooligosyl-Trehalose-Trehalohydrolase (MTHase) aus Sulfolobus acidocaldarius ATCC 33909 untersucht. Der optimale pH-Wert lag bei 5,5 und die optimale Temperatur bei 55 - 57 Grad C, bei Verwendung von Isoamylase aus Pseudomonas amyloderamosa als entzweigendem Enzym. Der Zusatz von Cyclomaltodextrin Glucanotransferase (CGTase) zur Reaktionsmischung waehrend des Verzuckerungsprozesses bewirkte eine Vermehrung an Trehalose und eine Verminderung an Maltose und Maltotriose. Isoamylase war besser als Pullulanase als entzweigendes Enzym. Die Ausbeute an Trehalose war unabhaengig von der verwendeten Staerkeart. Unter optimalen Bedingungen war die Ausbeute an Trehalose aus Maisstaerke in 30%iger Konzentration hoeher als 82 %.
Bibliography:Q04
Q02
97S9100
ISSN:0038-9056
1521-379X
DOI:10.1002/star.19970490107