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In the third century CE, black pepper made its first definite appearance in Chinese texts, as hujiao or "foreign pepper". It does not appear to have been widely known at the time, failing to appear in a fourth-century work describing a wide variety of spices from beyond China's southern border, including long pepper. [43]
Lectins are considered a major family of protein antinutrients, which are specific sugar-binding proteins exhibiting reversible carbohydrate-binding activities. [32] Lectins are similar to antibodies in their ability to agglutinate red blood cells. [33] Many legume seeds have been proven to contain high lectin activity, termed hemagglutination ...
The amount of piperine varies from 1–2% in long pepper, to 5–10% in commercial white and black peppers. [6] [7] Piperine can also be prepared by treating the solvent-free residue from a concentrated alcoholic extract of black pepper with a solution of potassium hydroxide to remove resin (said to contain chavicine, an isomer of piperine). [7]
Phytohaemagglutinin (PHA, or phytohemagglutinin) is a lectin found in plants, especially certain legumes. PHA actually consists of two closely related proteins, called leucoagglutinin (PHA-L) and PHA-E. These proteins cause blood cells to clump together. PHA-E cause erythrocytes (red blood cells) to clump.
The Piperaceae (/ ˌ p ɪ p ə ˈ r eɪ ʃ iː /), also known as the pepper family, are a large family of flowering plants. The group contains roughly 3,600 currently accepted species in five genera. The vast majority of species can be found within the two main genera: Piper (2,171 species) and Peperomia (over 1,000 species). [4]
Piperidine itself has been obtained from black pepper, [14] [15] from Psilocaulon absimile , [16] and in Petrosimonia monandra. [17] The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. This gave the compound its name.
In molecular biology, the leguminous lectin family is a family of lectin proteins. It is one of the largest lectin families with more than 70 lectins reported in a review in 1990. [ 1 ] Leguminous lectins consist of two or four subunits , each containing one carbohydrate-binding site.
Black pepper (P. nigrum) essential oil is sometimes used in herbalism, and long pepper (P. longum) is similarly employed in Ayurveda, where it was an ingredient of Triphala Guggulu and (together with black pepper) of Trikatu pills, used for rasayana (rejuvenating and detoxifying) purposes. One Piper species has gained large-scale use as a ...