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result sql = Pressurized Hot Water Extraction of anthocyanins from red onion: A study on extraction and degradation rates.
Pressurized Hot Water Extraction of anthocyanins from red onion: A study on extraction and degradation rates.
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char = x;code = 120
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char = ;code = 32
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char = r;code = 114
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char = e;code = 101
char = s;code = 115
char = .;code = 46
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char = T;code = 84
char = h;code = 104
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char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
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char = t;code = 116
char = s;code = 115
char = ;code = 32
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char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
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char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
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char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
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char = i;code = 105
char = n;code = 110
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = p;code = 112
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char = e;code = 101
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char = e;code = 101
char = s;code = 115
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char = ;code = 32
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char = r;code = 114
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char = ;code = 32
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char = ;code = 32
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char = c;code = 99
char = t;code = 116
char = i;code = 105
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char = n;code = 110
char = ;code = 32
char = p;code = 112
char = r;code = 114
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char = c;code = 99
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char = d;code = 100
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result sql = Pressurized Hot Water Extraction (PHWE) is a quick, efficient and environmentally friendly technique for extractions. However, when using PHWE to extract thermally unstable analytes, extraction and degradation effects occur at the same time, and thereby compete. At first, the extraction effect dominates, but degradation effects soon take over. In this paper, extraction and degradation rates of anthocyanins from red onion were studied with experiments in a static batch reactor at 110 degrees C. A total extraction curve was calculated with data from the actual extraction and degradation curves, showing that more anthocyanins, 21-36% depending on the species, could be extracted if no degradation occurred, but then longer extraction times would be required than those needed to reach the peak level in the apparent extraction curves. The results give information about the different kinetic processes competing during an extraction procedure.

Publication: Anal. Chim. Acta 2010 Mar 17 ;663(1)::27-32. :doi: 10.1016/j.aca.2010.01.023.
Publication Date: 2010 Mar 17
Study Author(s): Petersson, Erik V;Liu, Jiayin;Sjöberg, Per J R;Danielsson, Rolf;Turner, Charlotta;
Institution: Uppsala University, Department of Physical and Analytical Chemistry, P.O. Box 599, SE-751 24, Uppsala, Sweden.
Shortcut link to this study:
Pressurized Hot Water Extraction (PHWE) is a quick, efficient and environmentally friendly technique for extractions. However, when using PHWE to extract thermally unstable analytes, extraction and degradation effects occur at the same time, and thereby compete. At first, the extraction effect dominates, but degradation effects soon take over. In this paper, extraction and degradation rates of anthocyanins from red onion were studied with experiments in a static batch reactor at 110 degrees C. A total extraction curve was calculated with data from the actual extraction and degradation curves, showing that more anthocyanins, 21-36% depending on the species, could be extracted if no degradation occurred, but then longer extraction times would be required than those needed to reach the peak level in the apparent extraction curves. The results give information about the different kinetic processes competing during an extraction procedure.
PMID: 20172092

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