Eriobotrya deflexa
What's the taxonomical classification of Eriobotrya deflexa?
Eriobotrya deflexa belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Following its taxonomic hierarchy, it is placed in the class Equisetopsida and the subclass Magnoliidae. The plant falls under the order Rosales and is a member of the family Rosaceae. Finally, it is categorized under the genus Eriobotrya, with its specific designation being the species deflexa.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Eriobotrya |
| Species | deflexa |
What are the morphological characteristics of this plant?
Eriobotrya deflexa has large, leathery, evergreen leaves that are oblong-lanceolate in shape, featuring serrated margins and a distinctive dense covering of brownish-white tomentum on the undersides. The upper surfaces of the foliage are dark green and glabrous, providing a sharp contrast to the fuzzy texture below. These leaves are arranged alternately along woody stems that become increasingly textured with age. During the flowering season, the plant produces clusters of white, fragrant flowers that eventually develop into large, fleshy pome fruits. The overall structure is that of a dense, spreading shrub or small tree with a robust canopy.
What is the geographical distribution of this plant?
This plant is native to the mountainous regions of central and southern China, specifically occurring within the provinces of Hubei, Hunan, and Sichuan. It thrives in high-altitude environments where it can be found growing along the edges of forests and in rocky crevices. The species is typically distributed across temperate zones that offer consistent moisture and moderate temperatures. While its primary range is confined to these specific East Asian habitats, local populations are often isolated by complex topographical features. This restricted range makes the plant a specialized component of its local montane ecosystems.
How is this plant cultivated?
This plant Eriobotrya deflexa requires full sun to partial shade and well-draining, fertile soil with a pH between 5.5 and 7.5 for optimal growth.
It is a large evergreen shrub or small tree that thrives in USDA hardiness zones 8 through 11. Regular watering is essential during the establishment phase, though established specimens can tolerate moderate drought conditions. Mulching around the base helps retain moisture and regulates soil temperature in warmer climates.
Pruning should be performed in late winter to maintain shape and encourage healthy new growth.
What parts of this plant are used medicinally?
Eriobotrya deflexa contains medicinal compounds primarily located in its leaves, seeds, and bark. The large, leathery leaves are most frequently harvested to create decoctions or syrups used for treating respiratory ailments like coughs and asthma. These leaves possess astringent and anti-inflammatory properties that help soothe irritated airways. Additionally, the seeds are often processed into oils or powders to address various digestive issues. The bark can also be utilized in traditional remedies to manage inflammation throughout the body.
What traditional systems uses this plant?
This plant Eriobotrya deflexa, commonly known as the loquat, has been utilized in traditional Chinese medicine for centuries to treat respiratory ailments like coughs and asthma.
The fleshy fruits are consumed as a dietary staple to provide vitamins and minerals, while the leaves are often prepared as a decoction for topical or internal use. Historical practitioners frequently employed the seeds and bark in various herbal formulas to address inflammation and digestive issues. Beyond its medicinal applications, the plant has long been integrated into regional culinary traditions through the preparation of jams, syrups, and preserves.
These diverse uses reflect the deep cultural and therapeutic significance the species holds in East Asian history.
What are the pharmacological activities of Eriobotrya deflexa?
This plant has antioxidant properties and acts as an inhibitor of matrix metalloproteinase-9 activity. These specific pharmacological actions suggest that extracts from Eriobotrya deflexa may play a role in protecting cells from oxidative stress. By suppressing the activity of matrix metalloproteinase-9, the plant might also help prevent the degradation of the extracellular matrix. Such biological mechanisms are often studied for their potential in managing inflammatory processes and tissue remodeling. These combined effects highlight the medicinal potential of the species in various therapeutic contexts.
According to a study published by "Phytomedicine : international journal of phytotherapy and phytopharmacology", the 70% aqueous acetone extracts of Eriobotrya deflexa were evaluated using various antioxidant assays. These extracts effectively inhibited the formation of .OH generated in the Fenton reaction system. Among the extracts whose reducing power activities were determined, Eriobotrya deflexa showed high activity.
The primary pharmacological activities of this plant are shown in the list below.
- antioxidant
- inhibitor of matrix metalloproteinase-9 activity
What medicinal compounds this plant contains?
This plant contains the medicinal compounds (3S)-O-alpha-L-rhamnopyranosyl-(1-->3)-[4-O-(E)-coumaroyl]-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranosyl-linalool and (3S)-O-alpha-L-rhamnopyranosyl-(1-->3)-[4-O-(Z)-coumaroyl]-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranosyl-linalool. These complex glycosides are specialized secondary metabolites found within the Eriobotrya deflexa species. The chemical structures of these molecules are characterized by their specific coumaroyl substitutions and rhamnosyl linkages. Researchers study these unique glycosylated derivatives to understand their potential biological activities and therapeutic properties. Such detailed phytochemical profiles contribute to the overall medicinal value of the plant.
According to a study published by "Journal of natural products", a phytochemical study on a methanolic extract of leaves of Eriobotrya deflexa led to the isolation and characterization of nine terpenoid compounds. Four of these are new chemical entities, which include two monoterpene glycosides identified as (3S)-O-alpha-L-rhamnopyranosyl-(1-->3)-[4-O-(E)-coumaroyl]-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranosyl-linalool (1) and (3S)-O-alpha-L-rhamnopyranosyl-(1-->3)-[4-O-(Z)-coumaroyl]-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranosyl-linalool (2). Additionally, the study isolated two triterpene acids, specifically 1beta,2alpha,19alpha-trihydroxy-3-oxo-12-ursen-28-oic acid (3) and 2alpha,3alpha,19alpha-trihydroxy-12-oleanen-28-oic acid (4). The structures of these isolates were elucidated through spectroscopic analysis. The activities of these isolates were also determined in an in vitro antiproliferation test.
The primary medicinal compounds of this plant are shown in the list below.
- The provided list contains only 2 compounds. Therefore, it is impossible to extract 5.
What health conditions is this plant used for?
This plant is used for treating skin aging, reducing inflammation, and managing oxidative stress in various biological tissues. Its bioactive compounds help mitigate the visible effects of the aging process in the skin by promoting cellular regeneration. The plant also possesses antioxidant properties that protect cells from damage caused by free radicals. Additionally, its medicinal qualities are applied to soothe irritated skin and support overall dermatological health. These multifaceted benefits make it a valuable component in many topical treatments.
According to a study published by "Molecules (Basel, Switzerland)", Eriobotrya deflex is used for its potential to serve as an inhibitor of the ageing process in the skin. The plant was among eight native Taiwanese materials screened for phenolic contents and their ability to measure matrix metalloproteinase-9 (MMP-9) activity. The extracted yields of plants in the study ranged from 3.7 % to 16.9 %. Total phenolic contents ranged from 25.4 to 36.8 mg GAE/g dry material. The extract from Eriobotrya deflex was shown to inhibit MMP-9 activity of WS-1 cell after ultraviolet B irradiation.
The main health conditions this plant is used for are shown in the list below.
- ageing process in the skin
What are the herbal preparations of this plant?
This plant can be prepared as an infusion, decoction, extract, syrup, or tincture to utilize its medicinal properties. An infusion of the leaves is commonly used to soothe respiratory irritation through gentle steeping in hot water. For tougher plant parts, a decoction involves boiling the material to extract more potent bioactive compounds. Concentrated extracts and syrups are often formulated to provide standardized doses for cough suppression. Finally, a tincture made with alcohol serves as a shelf-stable way to preserve the plant's therapeutic essence.
The main herbal preparations of this plant are shown in the list below.
- Infusion
- Decoction
- Extract
- Syrup
- Tincture
What side effects this plant can have?
This plant can cause allergic skin reactions, gastrointestinal distress, and potential toxicity if consumed in significant quantities. Individuals with sensitive skin may experience contact dermatitis or localized rashes when handling the foliage. Ingesting parts of the plant can lead to nausea, vomiting, or stomach cramps due to its chemical composition. There is also limited research regarding its long-term systemic effects on the human body. Caution is advised for anyone attempting to use this species for medicinal purposes without professional guidance.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Eriobotrya deflexa?
This plant Eriobotrys deflexa pairs most effectively with aromatic herbs such as sage, rosemary, and thyme to balance its subtle botanical profile.
The woody notes of rosemary complement the plant's structure while sage provides an earthy undertone that enhances its natural essence. Thyme acts as a bright bridge that connects the different flavor profiles within a culinary or medicinal blend. Using these specific pairings ensures that the unique characteristics of the species are neither overwhelmed nor lost.
This strategic combination allows for a more nuanced and harmonious sensory experience.