Piper nigrum
Solanum nigrum
Black Pepper
Piper betle
Gnetum
Benzodioxoles
Ribes
Plant Extracts
Biochemical properties of polysaccharides from black pepper. (1/29)
The purified polysaccharides from Piper nigrum were prepared as follows: a hot water extract of pepper seeds was fractionated by ultrafiltration with a 5-kDa-membrane cartridge. A fraction with 5 kDa or bigger molecules was successively purified by open column chromatography on DEAE-Toyopearl 650C and Bio-gel P-60 with each active fraction, resulting in PN-Ib and PN-IIa, purified anti-complementary polysaccharides. None of the anti-complementary activity of any polysaccharide was changed by pronase digestion or polymyxin B treatment, but they were decreased by periodate oxidation. Analysis of component sugar and molecular mass determination of the anti-complementary polysaccharides indicated that PN-Ib with an average molecular mass of 21 kDa contained 88.5% glucose and other negligible minor monosaccharides, while PN-IIa showed a different monosaccharide composition, which contained a significant proportion of galactose, arabinose, galacturonic acid and rhamnose. The molar ratio of galactose and arabinose of PN-IIa (48 kDa) was 1.93:1. PN-1 did not react with beta-glucosyl Yariv reagent, however, PN-IIa did react, which indicated that PN-IIa might be an arabinogalactan. Based upon these results, the usefulness of purified anti-complementary polysaccharides from Piper nigrum is suggested as a supplement for immune enhancement. (+info)Effects of fragrance inhalation on sympathetic activity in normal adults. (2/29)
We investigated the effects of fragrance inhalation on sympathetic activity in normal adult subjects using both power spectral analysis of blood pressure fluctuations and measurement of plasma catecholamine levels. Fragrance inhalation of essential oils, such as pepper oil, estragon oil, fennel oil or grapefruit oil, resulted in 1.5- to 2.5-fold increase in relative sympathetic activity, representing low frequency amplitude of systolic blood pressure (SBP-LF amplitude), compared with inhalation of an odorless solvent, triethyl citrate (P<0.05, each). In contrast, fragrance inhalation of rose oil or patchouli oil caused a 40% decrease in relative sympathetic activity (P<0.01, each). Fragrance inhalation of pepper oil induced a 1.7-fold increase in plasma adrenaline concentration compared with the resting state (P = 0.06), while fragrance inhalation of rose oil caused a 30% decrease in adrenaline concentration (P<0.01). Our results indicate that fragrance inhalation of essential oils may modulate sympathetic activity in normal adults. (+info)Screening of antagonistic bacteria for biological control of nursery wilt of black pepper (Piper nigrum). (3/29)
Bacterial antagonists of Phytophthora capsici were isolated from underground shoot portions of rooted cuttings of black pepper. Initially isolates were screened by dual culture on potato dextrose agar and carrot agar. Further, a screening was done on black pepper shoots for supression of lesion caused by the pathogen. Most of the antagonists showed varying levels of antagonism in the dual culture and the shoot assay. Isolate PN-026, showing the highest suppression of lesion development in the shoot assay was found to be the most efficient antagonist in reducing Phytophthora capsici induced nursery wilt of black pepper. This screening involving the host, pathogen, and the antagonist, performed on black pepper shoot (the planting material for this vegetatively propagated crop), could be used as a rapid and reliable method for the isolation of efficient bacterial antagonists of P. capsici. (+info)Melanogenesis stimulation in murine B16 melanoma cells by Piper nigrum leaf extract and its lignan constituents. (4/29)
A methanolic extract from the leaves of Piper nigrum L. showed a significant stimulatory effect on melanogenesis in cultured murine B16 melanoma cells. Activity-guided fractionation of the methanolic extract led to the isolation of two known lignans, (-)-cubebin (1) and (-)-3,4-dimethoxy-3,4-desmethylenedioxycubebin (2), together with a new lignan, (-)-3-desmethoxycubebinin (3). Among these lignans, 1 and 2 showed a significant stimulatory activity of melanogenesis without any significant effects on cell proliferation. (+info)New insecticidal amides from petroleum ether extract of dried Piper nigrum L. whole fruits. (5/29)
The petroleum ether extract of dried ground whole fruits of Piper nigrum L. afforded 20 compounds (1-20) including two new insecticidal amides named as pipnoohine (1), and pipyahyine (2), seven reported for the first time from this plant (12, 13, 15-17, 19, 20), and eleven known compounds (3-11, 14, 18). The structure of 1 has been elucidated as (2E,4E,12Z)-N-(4-methylpentyl)octadeca-2,4,12-trienamide and that of 2 as (2E,4E,11E)-12-(benzo[1,3]dioxol-5-yl)-N-(3-methylbutyl)dodeca-2,4,11-trien-amide through extensive ID-, 2D-NMR spectral studies and chemical reactions. The known compounds have been identified through comparison of their spectral data with those reported in literature. 1 and 2 exhibited toxicity at 35.0 and 30.0 ppm respectively against fourth instar larvae of Aedes aegypti L. by WHO method. (+info)Evidence that the nonstructural protein of Tomato spotted wilt virus is the avirulence determinant in the interaction with resistant pepper carrying the TSW gene. (6/29)
All known pepper cultivars resistant to Tomato spotted wilt virus (TSWV) possess a single dominant resistance gene, Tsw. Recently, naturally occurring resistance-breaking (RB) TSWV strains have been identified, causing major concerns. We used a collection of such strains to identify the specific genetic determinant that allows the virus to overcome the Tsw gene in Capsicum spp. A reverse genetic approach is still not feasible for TSWV; therefore, we analyzed reassortants between wild-type (WT) and RB strains. Our results confirmed that the S RNA, which encodes both the nucleocapsid protein (N) and a nonstructural protein (NSs), carries the genetic determinant responsible for Tsw resistance breakdown. We then used full-length S RNA segments or the proteins they encode to compare the sequences of WT and related RB strains, and obtained indirect evidence that the NSs protein is the avirulence factor in question. Transient expression of NSs protein from WT and RB strains showed that they both can equally suppress post-transcriptional gene silencing (PTGS). Moreover, biological characterization of two RB strains carrying deletions in the NSs protein showed that NSs is important in maintaining TSWV infection in newly emerging leaves over time, preventing recovery. Analysis of another RB strain phenotype allowed us to conclude that local necrotic response is not sufficient for resistance in Capsicum spp. carrying the Tsw gene. (+info)Potential use of Piper nigrum ethanol extract against pyrethroid-resistant Aedes aegypti larvae. (7/29)
Fractionation of Piper nigrum ethanol extract, biomonitored by assays on pyrethroid-resistant Aedes aegypti larvae yielded isolation of the larvicidal amides piperolein-A and piperine. Comparing LC50 values, the ethanol extract (0.98 ppm) was the most toxic, followed by piperolein-A (1.46 ppm) and piperine (1.53 ppm). (+info)Testosterone 5alpha-reductase inhibitory active constituents of Piper nigrum leaf. (8/29)
Previously we reported that Piper nigrum leaf extract showed a potent stimulation effect on melanogenesis and that (-)-cubebin (1) and (-)-3,4-dimethoxy-3,4-desmethylenedioxycubebin (2) were isolated as active constituents. As a part of our continuous studies on Piper species for the development of cosmetic hair-care agents, testosterone 5alpha-reductase inhibitory activity of aqueous ethanolic extracts obtained from several different parts of six Piper species, namely Piper nigrum, P. methysticum, P. betle, P. kadsura, P. longum, and P. cubeba, were examined. Among them, the extracts of P. nigrum leaf, P. nigrum fruit and P. cubeba fruit showed potent inhibitory activity. Activity-guided fractionation of P. nigrum leaf extract led to the isolation of 1 and 2. Fruits of P. cubeba contain 1 as a major lignan, thus inhibitory activity of the fruit may be attributable to 1. As a result of further assay on other known constituents of the cited Piper species, it was found that piperine, a major alkaloid amide of P. nigrum fruit, showed potent inhibitory activity, thus a part of the inhibitory activity of P. nigrum fruit may depend on piperine. The 5alpha-reductase inhibitory activities of 1 and piperine were found for the first time. In addition, the P. nigrum leaf extract showed in vivo anti-androgenic activity using the hair regrowth assay in testosterone sensitive male C57Black/6CrSlc strain mice. (+info)'Piper nigrum' is not a medical term, but it is a botanical name. It refers to the black pepper plant, which is native to South India and Southeast Asia. The fruit of the plant, known as peppercorns, is used as a spice and has various medicinal properties.
Black pepper contains piperine, an alkaloid that gives it its pungent flavor and may have several health benefits, such as improving digestion, reducing inflammation, and enhancing bioavailability of nutrients in other foods when consumed together. However, more research is needed to confirm these potential benefits and establish appropriate dosages for medical use.
"Solanum nigrum" is the scientific name for a plant species that is commonly known as black nightshade. It belongs to the family Solanaceae, which also includes other well-known plants such as tomatoes, potatoes, and eggplants.
Black nightshade is an annual or short-lived perennial herb that can grow up to 1 meter tall. The plant has simple, alternate leaves that are usually dark green in color and have a slightly hairy texture. The flowers of the black nightshade are small and white with yellow centers, and they produce round, shiny black berries that contain numerous seeds.
While some parts of the black nightshade plant, including the berries, are edible and can be used in cooking, it is important to note that all parts of the plant contain solanine, a toxic alkaloid that can cause symptoms such as nausea, vomiting, diarrhea, and dizziness if ingested in large quantities. Therefore, it is generally recommended to avoid consuming any part of the black nightshade plant unless it has been properly prepared by a knowledgeable source.
In medical contexts, "Solanum nigrum" may be mentioned in relation to its potential medicinal properties or as a cause of toxicity if ingested in large quantities. However, it is not typically used as a medical treatment or therapy.
Black pepper is the dried fruit (seed) of the plant Piper nigrum, which belongs to the family Piperaceae. It is a widely used spice in various cuisines around the world due to its pungent and sharp flavor. The chemical compound piperine present in black pepper gives it its unique taste and aroma.
In a medical or nutritional context, black pepper may also be referred to for its potential health benefits. For instance, black pepper has been found to enhance the bioavailability of certain nutrients and compounds, making them easier for the body to absorb. Additionally, it contains antioxidants that can help protect cells from damage caused by free radicals. However, more research is needed to fully understand the extent of its medicinal properties.
'Piper betle' is not a medical term, but a botanical name for a plant also known as the betel vine or betel pepper. It is commonly found in Southeast Asian countries and is used in various traditional medicinal practices. The leaves of this plant are often chewed along with other substances like tobacco and slaked lime for their mild stimulant and psychoactive effects.
In a medical context, 'Piper betle' may be mentioned in relation to its potential pharmacological properties or possible health benefits/risks associated with its use. However, it is not considered a standard medical treatment or therapy.
"Gnetum" is a botanical term that refers to a genus of plants in the family Gnetaceae. These plants are not commonly referred to as "Gnetum" in a medical context, but rather by the specific names of their edible species, such as Gnetum gnemon (called "Melinjo" in Indonesian) and Gnetum Africanum (called "Okazi" or "Ukazi" in West Africa).
The leaves, seeds, and stems of some Gnetum species are used in traditional medicine in various parts of the world. However, there is limited scientific evidence to support their medicinal uses. Therefore, it's important to consult with a healthcare professional before using any plant-based remedies for medical purposes.
Benzodioxoles are chemical compounds that consist of a benzene ring (a six-carbon cyclic structure with alternating double bonds) linked to two oxide groups through methane bridges. They can be found naturally in some plants, such as nutmeg and tea, but they are also synthesized for use in various pharmaceuticals and illicit drugs.
In the medical field, benzodioxoles are used in the synthesis of certain drugs, including some antimicrobials, antihelmintics (drugs that treat parasitic worm infections), and muscle relaxants. However, they are perhaps best known for their use as a structural component in certain illicit drugs, such as ecstasy (MDMA) and related substances.
It's important to note that while benzodioxoles themselves may have some medical uses, many of the drugs that contain this structure can be dangerous when used improperly or without medical supervision.
"Ribes" is a botanical term that refers to a genus of shrubs in the family Grossulariaceae, which includes plants commonly known as gooseberries and currants. These plants are native to the temperate regions of the Northern Hemisphere and are widely cultivated for their edible fruits.
However, I believe you may be looking for a medical term related to "ribes." There is no specific medical term or condition directly related to "ribes" in the context of human health or disease. If you have any further questions or need clarification on a different medical term, please let me know!
A plant extract is a preparation containing chemical constituents that have been extracted from a plant using a solvent. The resulting extract may contain a single compound or a mixture of several compounds, depending on the extraction process and the specific plant material used. These extracts are often used in various industries including pharmaceuticals, nutraceuticals, cosmetics, and food and beverage, due to their potential therapeutic or beneficial properties. The composition of plant extracts can vary widely, and it is important to ensure their quality, safety, and efficacy before use in any application.
Piperaceae is not a medical term but a taxonomic category in botany, referring to the Pepper family of flowering plants. However, I can provide some general information about it.
Piperaceae is a family of flowering plants that includes around 3,600 species distributed across 55 genera. The family is particularly diverse in tropical regions, and many of its members are economically important as spices, ornamentals, and medicinal plants.
One of the most well-known members of Piperaceae is Piper nigrum, which produces black pepper, one of the most commonly used spices worldwide. Another member of the family is Piper methysticum, also known as kava, a plant native to the Pacific Islands that has been traditionally used for medicinal and ceremonial purposes.
While Piperaceae is not a medical term itself, some of its members have medicinal properties and are used in various traditional medicine systems. For example, black pepper has been used in Ayurvedic medicine for its anti-inflammatory and digestive properties, while kava has been used to treat anxiety and insomnia. However, it's important to note that the scientific evidence supporting these uses is limited, and more research is needed to confirm their safety and efficacy.
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Black pepper - Wikipedia![View of Optimization of DNA Isolation Protocol from Emerging Leaves of Black Pepper [Piper nigrum (L.)]](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAOCAMAAAAR8Wy4AAAAgVBMVEX///+bm5vC27rm8OP207W7u7vR0dH4+Pjh7d3K38Ov0KbZ6NW92LW82LO617HS5c2kypjR5Mzw9u/43sn32b/2+fX99O3E3L71zav65tb21LfX59L77eK006vs8+rS2tDv7++kraLd3d2vtK7i4uKTk5OanZmHh4fExMS/v7+xsbGn8QPXAAAAkElEQVQImW2NyRKCMBBEe0IIiyEqhEWRRYwS+f8P1JhYXpw5TPer7hrg/6RZznY/G8migFTyi6L9IXUp1QdyVCUqDZR5X3+AYmg4rzha5husRXfi3RkZ6x2olcRFV1yDDaOPDEDzXsgxvJn8ma/BLzeKF2Hu28N7Wo2diayAWBMHREIWRKCn2UInEdhiCOP0C7JzB0u8y2mWAAAAAElFTkSuQmCC)
View of Optimization of DNA Isolation Protocol from Emerging Leaves of Black Pepper [Piper nigrum (L.)]
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พริกไทยอ่อน (200 กรัม) PIPER NIGRUM - 
Impact of dietary leaf extracts of Black pepper Piper nigrum L. on the growth, hematological and immunological parameters of...