Lonicera japonica
What's the taxonomical classification of Lonicera japonica?
Lonicera japonica belongs to the kingdom Plantae and is classified within the phylum Streptophyta. Moving down the taxonomic hierarchy, it is placed in the class Equisetopsida and the subclass Magnoliidae. Within the order Dipsacales, it is a member of the family Caprifoliaceae. Finally, the plant is categorized under the genus Lonicera, with its specific designation being the species japonica.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Dipsacales |
| Family | Caprifoliaceae |
| Genus | Lonicera |
| Species | japonica |
What are the morphological characteristics of this plant?
Lonicera japonica has woody, twining stems that function as vines, opposite leaves that are ovate to elliptic in shape, and tubular, fragrant white or pale yellow flowers. The foliage typically measures one to three inches in length and features smooth or slightly serrated margins. As the growing season progresses, the plant produces small, fleshy berries that transition from red to a deep black color when mature. These berries are often clustered near the nodes of the climbing stems. The overall structure allows the plant to scramble over other vegetation using its flexible, sprawling habit.
What is the geographical distribution of this plant?
This plant is native to East Asia, specifically spanning across Japan, Korea, and parts of China. Due to its ability to thrive in diverse environments, it has been widely introduced to many other regions around the world. In North America, it has naturalized extensively throughout the eastern and central United States. It often colonizes disturbed sites, forest edges, and riparian zones in these non-native habitats. Its widespread presence in many temperate climates makes it a significant component of local ecosystems.
How is this plant cultivated?
This plant, commonly known as Japanese honeysuckle, thrives in well-drained soil with full sun to partial shade and requires regular watering to maintain consistent moisture.
It is a vigorous climber that benefits from organic mulch to regulate soil temperature and retain hydration. Because of its rapid growth rate, periodic pruning is necessary to manage its spread and encourage dense flowering. While it is quite hardy and adaptable to various climates, providing adequate space ensures it does not become overly invasive in a garden setting.
Careful monitoring for pests and diseases will help maintain the health of the vines during the growing season.
What parts of this plant are used medicinally?
This plant, Lonicera japonica, provides medicinal benefits through its flowers, leaves, roots, stems, and buds. The fragrant flowers are commonly dried to create teas that help reduce fever and soothe inflammation. Its green leaves are often utilized in topical applications or decoctions to treat skin ailments and respiratory issues. The roots are harvested for their ability to clear heat and detoxify the body in traditional practices. Both the stems and the young buds are integrated into herbal formulas to address various systemic imbalances.
According to a study published by "Pharmaceuatical biology", the Flower Lonicera japonica Thunb. is used as a medicinal herb in herbal-processing technology. This process was investigated in S180-bearing mice to observe detoxification mechanisms. The study involved evaluating the ED50 of the converted triptolide in each processed-herb product. For serum alanine transaminase, aspartate transaminase, creatinine and urea nitrogen, the values were 9.3, 16.6, 2.5 and 4.2 μg/kg. The processed product also resulted in liver glutathione, glutathione S-transferase, catalase, tumour necrosis factor-α and interleukin-10 levels of 114.9, 67.8, 134.1, 7.7, 4171.6 μg/kg. Additionally, kidney levels were measured at 21.9, 20.5, 145.0, 529.7, 19.4 μg/kg, and the tumour inhibition rate was enhanced with an ED50 of 12.2 μg/kg.
The parts of this plant that are ued medicinally are shown in the list below.
- Flower
- Leaves
- Root
- Stem
- Bud
What traditional systems uses this plant?
This plant, Lonicera japonica, has been utilized in Chinese folk medicine for centuries to treat various inflammatory conditions and infections. Practitioners traditionally used the dried flowers and stems to formulate decoctions aimed at clearing heat and resolving toxicity from the body. These medicinal preparations were frequently applied to address symptoms such as fever, sore throat, and skin ailments. Beyond its use in Chinese systems, the plant also holds a place in other historical herbal traditions for its perceived cooling properties. The widespread application of this species demonstrates its long-standing importance in managing common ailments through botanical means.
According to a study published by "Journal of ethnopharmacology", Lonicera japonica Thunb. (Caprifoliaceae) is one of the medicinal plants traditionally used in China for treating conditions likely to be associated with inflammation and viral infection. In the study, nine ethanol extracts were screened for their effect on RANTE secretion by influenza A virus (H1N1)-infected human bronchial epithelial cells (A549). When tested at a concentration of 200 microg/ml, Lonicera japonica did not possess a more than 50% suppressing effect on RANTE secretion by the H1N1-infected A549 bronchial epithelial cells.
The hystorical systems that uses this plant are shown in the list below.
- Chinese folk medicine
What are the pharmacological activities of Lonicera japonica?
This plant has anti-inflammatory, antioxidant, antibacterial, antiviral, and antimicrobial pharmacological activities derived from its diverse bioactive compounds. The presence of flavonoids and phenolic acids allows the plant to neutralize free radicals and reduce oxidative stress in biological systems. Its potent antimicrobial and antibacterial properties enable it to effectively inhibit the growth of various pathogenic bacteria and microorganisms. Additionally, the plant exhibits significant antiviral capabilities that can assist in managing viral infections. These combined medicinal effects make Lonicera japonica a valuable subject for therapeutic research and traditional medicine applications.
According to a study published by "Journal of chromatography. B, Analytical technologies in the biomedical and life sciences", the Chinese medicinal herb honeysuckle contains chlorogenic acid, which is one of its most bioactive compounds. This compound serves as a natural antioxidant and acts as an anti-inflammatory, anti-tumor, anti-mutagenic, and anti-carcinogenic agent. Through a separation process using HPD-850 resin, the chlorogenic acid content in the final product was increased 4.46-fold from 11.2% to 50.0%. This specific treatment also resulted in a recovery yield of 87.9%. The adsorption rate for this compound at 25 degrees C fits best to the Langmuir isotherm.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- anti-oxidant
- anti-microbial
- anti-viral
- anti-cancer
What medicinal compounds this plant contains?
This plant contains medicinal compounds such as chlorogenic acid, loniceroside A, loniceroside B, loganin, and sweversiide. These specific phytochemicals contribute to the plant's diverse pharmacological activities, including anti-inflammatory and antioxidant properties. Research indicates that the iridoid glycosides like loganin and sweversiide play significant roles in its therapeutic potential. Furthermore, the presence of loniceroside A and B provides unique chemical markers for its medicinal use. These bioactive constituents work together to support various traditional healing applications.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", the kill-enzyme torrefaction process is the optimal method for Flos Lonicerae. This specific process results in a Chlorogenic Acid content that is 12.8% higher than samples directly dried in the sun and 24.9% higher than those dried in the shade. Furthermore, the content of Luteolin-7-glu in kill-enzyme torrefaction samples is 7.8% higher than the directly dried in the sun method. This Luteolin-7-glu level is also 54.3% higher than the amount found in samples dried in the shade. Utilizing this technology is considered an important part of GAP large-scale production for Flos Lonicerae.
The primary medicinal compounds of this plant are shown in the list below.
- Chlorogenic acid
- Loniceroside A
- Loniceroside B
- Secoxyloganin
- Sweroside
What health conditions is this plant used for?
This plant is used for treating Shang Huo, a condition characterized by clearing heat and thirst. It serves as an effective remedy for managing excessive body heat throughout the system. By addressing internal overheating, the herb helps to restore physiological balance. This process is particularly useful for alleviating the symptoms of persistent thirst. Consistent use can help stabilize temperatures and soothe the body's heat-related imbalances.
According to a study published by "Frontiers in pharmacology", Lonica japonica is used in herbal drinks to reduce Shang Huo, which is a status of sub-optimal health caused by excessive body heat. In vitro studies indicate that Jin, which refers to Lonica japonica, can lower cellular inflammation either individually or synergistically with Gan. When tested in vivo, the synergistic formulation of Jin and Gan in the reduction of Shang Huo resulted in a lower percentage of neutrophils, monocytes, and the CD4+/CD8+ ratio in the blood. This combination also led to a reduction in inflammatory cytokines. Additionally, the body weight in the combinatory groups was more stable than treatments using single herbs.
The main health conditions this plant is used for are shown in the list below.
- Shang Huo
- clearing heat and thirst
- excessive body heat
- overheating
- thirst
What are the herbal preparations of this plant?
This plant is Lonicera japonica, which provides the dried flowers known as Flos Lonicerae used in various traditional Chinese medicinal preparations to clear heat and detoxify. It serves as a key ingredient in the classic combination Shuang-Huang-Lian, which is frequently employed to treat febrile diseases and inflammatory conditions. Other formulations including Toujie Quwen Granules and Yinhuang langxiao granule utilize its properties to resolve toxins and alleviate swelling. Additionally, it is incorporated into Yinquiao to support respiratory health and manage symptoms of external wind-heat. These diverse preparations highlight the plant's significant role in addressing diverse patterns of heat and toxicity.
According to a study published by "Planta medica", seven candidate DNA bar codes including RBCL, MATK, PSBA-TRNH, ITS2, ITS, TRNL intron, and TRNL-F intergenic spacer were tested on forty-four samples of Lonicera japonica. All seven candidate bar codes yielded 100 % PCR amplification efficiency during the testing process. The sequencing efficiency of five candidate bar codes was 100%, though this excluded ITS and ITS2. The PSBA-TRNH intergenic spacer possessed the highest species identification efficiency at 100 % by the BLAST1 method. This specific DNA bar code is suitable for the identification of the botanical origins of Flos Lonicerae Japonicae.
The main herbal preparations of this plant are shown in the list below.
- Flos Lonicerae
- Shuang-Huang-Lian
- Toujie Quwen Granules
- Yinhuang langxiao granule
- Yinquiao
What side effects this plant can have?
This plant can cause acute hemolysis within vessels, immediate hypersensitivity reaction, intraplantar vasopermeability, lifetime carcinogenic risk, and shock. Exposure to its toxic components may trigger rapid destruction of red blood cells directly inside the circulatory system. Contact with the plant can lead to sudden allergic responses or localized increases in vessel permeability through the skin. Severe systemic reactions can escalate quickly into life-threatening shock. Furthermore, long-term exposure is associated with a significant lifetime carcinogenic risk.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", Lonicerat japonica, referred to as honeysuckle, is a component of Qingkailing injection that causes hemolysis in certain doses. In high dose groups of mice, blood routine detection showed lower counts of RBC and WBC along with lower hemoglobin content. Clinical practice observations indicate that acute hemolysis within vessels might be caused by honeysuckle. This hemolysis was found to be independent of allergy.
The main side effects this plant can have are shown in the list below.
- acute hemolysis within vessels
- immediate hypersensitivity reaction
- intraplantar vasopermeability
- lifetime carcinogenic risk
- shock
What herbs are paired with Lonicera japonica?
This plant, Lonicera japonica, pairs effectively with herbs like peppermint, ginger, and lemon balm to enhance its cooling and floral properties.
When used in medicinal teas, the addition of ginger can balance the plant's natural cooling effect with much-needed warmth. Peppermint complements the honey-like scent of the honeysuckle flowers while adding a refreshing sensory dimension to the infusion. Lemon balm works synergistically with the plant to provide a calming effect on the nervous system.
These combinations are frequently utilized in traditional herbalism to create balanced wellness tonics.