[0038] "Pectin" means any naturally-occurring oligosaccharide or polysaccharide that
ประกอบรวมด้วย galacturonic acid that may be found in the cell wall of a plant. Different varieties and grades of pectin having varied physical and chemical properties are known in the art. Indeed, the structure of pectin can vary significantly between plants, between tissues, and even within a single cell wall. Generally, pectin is made up of negatively charged acidic sugars (galacturonic acid), and some of the acidic groups are in the form of a methyl ester group. The degree of esterification of pectin is a measure of the percentage of the carboxyl groups attached to the galactopyranosyluronic acid units that are esterified with methanol.
[0039] Pectin having a degree of esterification of less than 50% (i.e., less than 50% of the
carboxyl groups are methylated to form methyl ester groups) are classified as low-ester, low
methoxyl, or low methylated ("LM") pectins, while those having a degree of esterification of 50% or greater than 50%, (i.e., more than 50% of the carboxyl groups are methylated) are classified as high-ester, high methoxyl or high methylated ("HM") pectins. Very low ("VL") pectins, a
subset of low methylated pectins, have a degree of esterification that is less than approximately 15%.
[0038] "Pectin" means any naturally-occurring oligosaccharide or polysaccharide thatประกอบรวมด้วย galacturonic acid that may be found in the cell wall of a plant. Different varieties and grades of pectin having varied physical and chemical properties are known in the art. Indeed, the structure of pectin can vary significantly between plants, between tissues, and even within a single cell wall. Generally, pectin is made up of negatively charged acidic sugars (galacturonic acid), and some of the acidic groups are in the form of a methyl ester group. The degree of esterification of pectin is a measure of the percentage of the carboxyl groups attached to the galactopyranosyluronic acid units that are esterified with methanol.[0039] Pectin having a degree of esterification of less than 50% (i.e., less than 50% of thecarboxyl groups are methylated to form methyl ester groups) are classified as low-ester, lowmethoxyl, or low methylated ("LM") pectins, while those having a degree of esterification of 50% or greater than 50%, (i.e., more than 50% of the carboxyl groups are methylated) are classified as high-ester, high methoxyl or high methylated ("HM") pectins. Very low ("VL") pectins, a subset of low methylated pectins, have a degree of esterification that is less than approximately 15%.
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