CHARACTERIZATION OF GRAPEFRUIT FLAVEDO PEROXIDASES
نویسندگان
چکیده
منابع مشابه
limitation of Alternative Respiratory Pathway Activity in Grapefruit Flavedo Tissue by Oxygen Availability.
The capacity of the alternative respiratory pathway increased in the flavedo tissue of ;Marsh' grapefruit (Citrus paradisi Macf.) stored at 5 degrees C for 2 weeks or longer. Elevated O(2) levels during respiratory assays enhanced respiration by the tissue at 20 degrees C but not at 5 degrees C. At 20 degrees C, salicylhydroxamic acid alone was inhibitory to O(2) uptake only in elevated O(2). I...
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Galdieria partita, a unicellular red alga isolated from acidic hot springs and tolerant to sulfur dioxide, has at least two ascorbate peroxidase (APX) isozymes. This was the first report to demonstrate that two isozymes of APX are found in algal cells. Two isozymes were separated from each other at the hydrophobic chromatography step of purification and named APX-A and APX-B after the elution o...
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Four isozymes of manganese peroxidase (MnP) were identified in the culture fluid of the hyperlignolytic fungus IZU-154 under nitrogen starvation conditions. One of them was purified and characterized kinetically. The specific activity and Kcat/K(m) value of the MnP from IZU-154 were 1.6 times higher than those of the MnP from a typical lignin-degrading fungus, Phanerochaete chrysosporium. Two c...
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Putrescine (Put) increased 68% in lemon (Citrus limon (L.) Burm. f. cv Bearss) flavedo, 39% in grapefruit (C. paradisi Macf. cv Marsh) flavedo, 49% in grapefruit juice, and 149% in pepper (Capsicum annuum L. cv Early Calwonder) pericarp when fruits were stored at chilling temperatures. In lemon flavedo, the coefficient of correlation (r(2)) between Put concentration with severity of chilling wa...
متن کاملPURIFICATION AND PARTIAL CHARACTERIZATION O F PEROXIDASES FROM CULTIVATED RAPHANUS SATIVUS L. VAR. CICIL
Two peroxidases (EC. 1.11.1.7), POD I and POD II were purified from the roots of cultivatedRaphanus sativus L. Var. Cicil by one step ion-exchange chromatography after fractionation by acetone. The molecular weight of these enzymes were 43000 and 41000 Daltons and RZ 1.2 and 2.0 for POD I and POD II, respectively. Both enzymes consisted of a single polypeptide chain on SDS-PAGE. The maximum...
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ژورنال
عنوان ژورنال: HortScience
سال: 1992
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.27.6.661f