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result sql = Purification and characterization of an olive fruit beta-glucosidase involved in the biosynthesis of virgin olive oil phenolics.
Purification and characterization of an olive fruit beta-glucosidase involved in the biosynthesis of virgin olive oil phenolics.
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char = n;code = 110
char = y;code = 121
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char = e;code = 101
char = t;code = 116
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char = d;code = 100
char = -;code = 45
char = g;code = 103
char = l;code = 108
char = u;code = 117
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = p;code = 112
char = N;code = 78
char = P;code = 80
char = G;code = 71
char = );code = 41
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = c;code = 99
char = c;code = 99
char = o;code = 111
char = r;code = 114
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = -;code = 45
char = g;code = 103
char = l;code = 108
char = u;code = 117
char = c;code = 99
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = i;code = 105
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = c;code = 99
char = u;code = 117
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = An olive beta-glucosidase was purified to apparent homogeneity from mature fruits ( Olea europaea cv. Picual) by selective extraction and successive anion exchange and hydrophobic interaction chromatographic procedures. The enzyme was shown to be a homodimer made up of two identical subunits of 65.4 kDa. Optimum activity was recorded at pH 5.5 and 45 degrees C. The enzyme was active on the main olive phenolic glycosides, with maximum activity toward oleuropein (100%), followed by ligstroside (65%) and demethyloleuropein (21%). The enzyme showed very low activity with apigenin and luteolin glucosides and was not active on verbascoside and rutin. Kinetic values show that olive beta-glucosidase is 200-fold more active against oleuropein than against the synthetic substrate p-nitrophenyl-beta-d-glucopyranoside (pNPG). According to its catalytic properties, the implication of the purified olive beta-glucosidase on the synthesis of virgin olive oil phenolics is discussed.

Publication: J. Agric. Food Chem. 2009 Sep 9 ;57(17)::7983-8.
Publication Date: 2009 Sep 9
Study Author(s): Romero-Segura, Carmen;Sanz, Carlos;Perez, Ana G;
Institution: Department of Physiology and Technology of Plant Products, Instituto de la Grasa, CSIC, Padre Garcia Tejero 4, 41012 Seville, Spain.
Shortcut link to this study:
An olive beta-glucosidase was purified to apparent homogeneity from mature fruits ( Olea europaea cv. Picual) by selective extraction and successive anion exchange and hydrophobic interaction chromatographic procedures. The enzyme was shown to be a homodimer made up of two identical subunits of 65.4 kDa. Optimum activity was recorded at pH 5.5 and 45 degrees C. The enzyme was active on the main olive phenolic glycosides, with maximum activity toward oleuropein (100%), followed by ligstroside (65%) and demethyloleuropein (21%). The enzyme showed very low activity with apigenin and luteolin glucosides and was not active on verbascoside and rutin. Kinetic values show that olive beta-glucosidase is 200-fold more active against oleuropein than against the synthetic substrate p-nitrophenyl-beta-d-glucopyranoside (pNPG). According to its catalytic properties, the implication of the purified olive beta-glucosidase on the synthesis of virgin olive oil phenolics is discussed.
PMID: 19689134

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