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单词 pectic
例句 pectic
As the names indicate, the non-cellulose component in the first group is lignin; in the second, pectic substances; and in the third, fats or waxes. The Chemistry of Plant Life
It is eaten under the name of “Tuckahoe” in the United States, and as it consists almost entirely of pectic acid, it is sometimes used in the manufacture of jelly. Fungi: Their Nature and Uses
The 'pectic' group consequently must be extended to include hydrated and soluble forms of the mixed complex of condensed and unsaturated groups with normal carbohydrates, such as constitute the fibrous lignocelluloses. Researches on Cellulose 1895-1900
The characteristic constituent of unripe fruit, however, is pectose, an element insoluble in water, but which, as maturation proceeds, is transformed into pectic and pectosic acids. Science in the Kitchen.
Other enzymes, known as "pectinases," which coagulate the soluble pectins or pectic acids into insoluble jellies in the tissues of the plants seem to aid the plant in resisting the penetration by the parasite. The Chemistry of Plant Life
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