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Actinidain is active over a wide range of pH, including very acidic conditions, [20] with a pH optimum from 5-7. [21] At least ten different isoforms that all have the same molecular weight and cysteine protease activity as actinidain have been identified but they vary in isoelectric point from acidic (pI 3.9) to basic (pI 9.3).
Anthocyanins may be used as pH indicators because their color changes with pH; they are red or pink in acidic solutions (pH < 7), purple in neutral solutions (pH ≈ 7), greenish-yellow in alkaline solutions (pH > 7), and colorless in very alkaline solutions, where the pigment is completely reduced. [57]
Carbohydrate-containing foods are classified as high (above 70), moderate (56–69), or low (0–55) GI. [19] Foods with high fiber content generally have a low GI. However, other factors also contribute to a food's glycemic response, such as the type of carbohydrate or sugar present, the physical characteristics of the food matrix, and the ...
It has a characteristic reddish-purple color, though this can change with pH; solutions of the compound are red at pH < 3, violet at pH 7-8, and blue at pH > 11. In certain fruits, the highest concentrations of cyanidin are found in the seeds and skin. [citation needed] Cyanidin has been found to be a potent sirtuin 6 (SIRT6) activator. [2] [3]
[4] [5] Therefore the categorization acidophile/acidophobe is well-defined. Sometimes a complementary classification is used (calcicole/calcifuge, with calcicoles being "lime-loving" plants). In gardening, soil pH is a measure of acidity or alkalinity of soil, with pH = 7 indicating the neutral soil. Therefore acydophobes would prefer pH above 7.
The fruit, an orange-sized purple berry with fleshy endocarp, [4] [5] contains five to eight seeds, which account for 20–23% of the fruit's weight. The kernels account for 61 percent of the weight of the seed and about 44% of its oil.
The fatty acid compositions of fruit pulp oil of 2 cultivars of D. edulis (cultivars 1 and 2, grown in Cameroon) were determined. Fruits significantly differed in mass, length, thickness of pulp and mass of kernel, but contained similar amounts of oil (64.7 and 62% in cultivars 1 and 2, respectively, with ratios of oil:fruit of 1.4 and 1.54 ...
Alibertia patinoi, commonly known as borojó, is a small (2-5m), dioecious tropical rainforest tree, one of the few edible fruit bearing species in the Rubiaceae family. . Borojó, native to the world's wettest lowlands (the Chocó–Darién moist forests ecoregion), grows in the Chocó Department of northwestern Colombia and in the Esmeraldas Province of northwestern Ec