char = T;code = 84
char = y;code = 121
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char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = i;code = 105
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char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = 4;code = 52
char = ';code = 39
char = -;code = 45
char = O;code = 79
char = -;code = 45
char = &;code = 38
char = #;code = 35
char = 9;code = 57
char = 4;code = 52
char = 6;code = 54
char = ;;code = 59
char = -;code = 45
char = D;code = 68
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 = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = (;code = 40
char = A;code = 65
char = l;code = 108
char = l;code = 108
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = a;code = 97
char = );code = 41
char = .;code = 46
result sql = Tyrosinase inhibitory effect of quercetin 4'-O-β-D-glucopyranoside from dried skin of red onion (Allium cepa).
Tyrosinase inhibitory effect of quercetin 4'-O-β-D-glucopyranoside from dried skin of red onion (Allium cepa).
char = I;code = 73
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char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = w;code = 119
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
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char = g;code = 103
char = e;code = 101
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char = t;code = 116
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char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = c;code = 99
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
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char = l;code = 108
char = l;code = 108
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = a;code = 97
char = ;code = 32
char = (;code = 40
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = );code = 41
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char = ;code = 32
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char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = g;code = 103
char = u;code = 117
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = m;code = 109
char = u;code = 117
char = s;code = 115
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = t;code = 116
char = y;code = 121
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = 4;code = 52
char = ';code = 39
char = -;code = 45
char = O;code = 79
char = -;code = 45
char = &;code = 38
char = #;code = 35
char = 9;code = 57
char = 4;code = 52
char = 6;code = 54
char = ;;code = 59
char = -;code = 45
char = D;code = 68
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 = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = A;code = 65
char = .;code = 46
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = a;code = 97
char = .;code = 46
char = ;code = 32
char = Q;code = 81
char = u;code = 117
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = 4;code = 52
char = ';code = 39
char = -;code = 45
char = O;code = 79
char = -;code = 45
char = &;code = 38
char = #;code = 35
char = 9;code = 57
char = 4;code = 52
char = 6;code = 54
char = ;;code = 59
char = -;code = 45
char = D;code = 68
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 = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = y;code = 121
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = L;code = 76
char = -;code = 45
char = t;code = 116
char = y;code = 121
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = L;code = 76
char = -;code = 45
char = D;code = 68
char = O;code = 79
char = P;code = 80
char = A;code = 65
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = I;code = 73
char = C;code = 67
char = (;code = 40
char = 5;code = 53
char = 0;code = 48
char = );code = 41
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = l;code = 108
char = u;code = 117
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 4;code = 52
char = .;code = 46
char = 3;code = 51
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 5;code = 53
char = 2;code = 50
char = .;code = 46
char = 7;code = 55
char = ;code = 32
char = &;code = 38
char = #;code = 35
char = 1;code = 49
char = 8;code = 56
char = 1;code = 49
char = ;;code = 59
char = M;code = 77
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = B;code = 66
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
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 = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = b;code = 98
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = -;code = 45
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = s;code = 115
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = -;code = 45
char = t;code = 116
char = y;code = 121
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = In an effort to find a new whitening agent, we focused our attention on Allium cepa (red onion). Based on biologically guided fractionation using mushroom tyrosinase, quercetin 4'-O-β-D-glucopyranoside was isolated from the dried skin of A. cepa. Quercetin 4'-O-β-D-glucopyranoside showed tyrosinase inhibitory activity using L-tyrosine or L-DOPA as a substrate, with IC(50) values of 4.3 and 52.7 µM, respectively. Based on the results obtained, the dried skin of red onion possesses ingredients with potential for skin-whitening cosmetics with anti-tyrosinase activity.

Publication: Nat. Prod. Res. 2011 Feb ;25(3)::256-63. :doi: 10.1080/14786411003754256.
Publication Date: 2011 Feb
Study Author(s): Arung, Enos Tangke;Wijaya Kusuma, Irawan;Shimizu, Kuniyoshi;Kondo, Ryuichiro;
Institution: Department of Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
Shortcut link to this study:
In an effort to find a new whitening agent, we focused our attention on Allium cepa (red onion). Based on biologically guided fractionation using mushroom tyrosinase, quercetin 4'-O-β-D-glucopyranoside was isolated from the dried skin of A. cepa. Quercetin 4'-O-β-D-glucopyranoside showed tyrosinase inhibitory activity using L-tyrosine or L-DOPA as a substrate, with IC(50) values of 4.3 and 52.7 µM, respectively. Based on the results obtained, the dried skin of red onion possesses ingredients with potential for skin-whitening cosmetics with anti-tyrosinase activity.
PMID: 20635304

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