Syzygium samarangense

Syzygium samarangense · Accepted scientific name

Scientific literature: Very Sparse (6 studies) · ★☆☆☆☆

Syzygium samarangense, commonly known as the wax apple, is a botanical species whose fruit serves as a rich source of bioactive compounds. The plant contains significant amounts of flavonoids and volatile oils, which contribute to its diverse therapeutic potential. Research has demonstrated that various preparations, including hexane extracts and essential oils, exhibit potent antimicrobial activity against pathogens such as Proteus vulgaris. Furthermore, the fruit displays remarkable antioxidant and antihyperglycemic properties that support metabolic health. These characteristics also suggest significant antiaging benefits, particularly in addressing the physiological markers of skin aging.

Quick facts
Synonyms
Eugenia Alba · Eugenia Mindanaensis · 16 more
Common names
Not available
Family
Myrtaceae
Distribution
Not available
Plant Parts
Fruit

Classification

Common Names

Syzygium samarangense is a fascinating botanical species that is recognized by a diverse array of regional names. It is frequently referred to by its common name, Jambo, which serves as a primary identifier for many people. Depending on the local dialect or area, it may also be known as Jambeiro-rosa or Jambo-rosa. Some enthusiasts and locals might even use the names Jamalac or Jambu to describe this distinctive plant. This variety of nomenclature highlights the widespread cultural presence and botanical importance of the species.

Sources: Catalogue of Life (COL)

Synonyms

Syzygium samarangense is a botanical subject characterized by a complex web of taxonomic synonyms. It has been historically identified under several different names, including the designation Eugenia alba. Further scientific overlap occurs with classifications such as Eugenia javanica var. parviflora and Eugenia javanica var. roxburghiana. The plant is also linked to the names Eugenia mindanaensis and Eugenia samarangensis within various botanical records. Understanding these relationships is essential for accurate identification and consistent scientific communication.

Sources: The World Checklist of Vascular Plants (WCVP)

Taxonomy

Syzygium samarangense belongs to the diverse kingdom Plantae, representing a significant part of the natural world. Within this vast kingdom, the species is classified under the class Equisetopsida. It further falls into the order Myrtales, which helps define its botanical characteristics. As a member of the Myrtaceae family, it shares close evolutionary ties with many other aromatic plants. Finally, its specific placement within the genus Syzygium highlights its unique identity among its botanical relatives.

Rank Classification
Kingdom Plantae
Phylum Streptophyta
Class Equisetopsida
Subclass Magnoliidae
Order Myrtales
Family Myrtaceae
Genus Syzygium

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

Geographic Regions

Syzygium samarangense exhibits a broad geographical range that spans across diverse ecological zones. In the African region, the species is widely distributed throughout the Western Indian Ocean, including the Chagos Archipelago. Its presence is also well-established across several island nations such as Mauritius, Réunion, and the Seychelles. Moving toward the Asian continent, the plant can be found within temperate regions, specifically throughout parts of China. This extensive distribution highlights the adaptability of the species across both tropical islands and temperate landscapes.

Sources: The World Checklist of Vascular Plants (WCVP)

Identification

Morphology

Syzygium samarangense is a distinctively self-supporting species that establishes itself through a sturdy tree growth form. This plant typically reaches a significant stature, with a maximum height of approximately 15 meters. Depending on its specific environmental conditions, the height can vary, often ranging from a minimum of 5 meters. In many established settings, it maintains a more consistent presence between 12 and 15 meters tall. Such structural characteristics make it a prominent feature in its natural landscape.

Sources: Global Inventory of Floras and Traits (GIFT)

Biological Activities

Syzygium samarangense demonstrates a diverse range of therapeutic properties that highlight its significant pharmacological potential. Research indicates that its volatile oils possess strong antimicrobial activity, specifically showing effectiveness in inhibiting the growth of various enteric bacteria like Salmonella typhimurium. The plant also exhibits potent antihyperglycemic effects, with methanolic leaf extracts proving highly effective at reducing serum glucose levels in studies. Furthermore, its essential oils display notable antioxidant properties and antiaging capabilities through the inhibition of key skin enzymes. Finally, the plant has shown antiproliferative activity, specifically through its cytotoxic effects against human malignant melanoma cells.

Compounds

Syzygium samarangense contains volatile oil that demonstrates significant potential as a natural antimicrobial agent. Research indicates that this essential oil, extracted via hydrodistillation, is highly effective at inhibiting the growth of various enteric bacteria. Specifically, the oil shows remarkable sensitivity against Salmonella typhimurium, acting as a competitive inhibitor of its extracellular protease. By disrupting the caseinolytic activity of these enzymes, the volatile oil targets the very mechanisms pathogens use to function. Consequently, the secondary metabolites found within this plant offer a promising pharmaceutical pathway for managing bacterial infections.

Conditions

Syzygium samarangense demonstrates significant medicinal potential by inhibiting the growth of various enteric bacteria. The volatile oil of this plant effectively treats Proteus vulgaris and is particularly potent against S. typhimurium. Furthermore, its bioactive compounds act to treat the extracellular protease of Salmonella typhimurium through competitive inhibition. Beyond antimicrobial properties, polysaccharides isolated from the plant help treat EC-induced cytotoxicity in human hepatocytes. These diverse biological activities highlight the plant's ability to combat both bacterial pathogens and cellular oxidative damage.

Preparations

Syzygium samarangense is prepared as essential oils to explore its antimicrobial, antiaging, and antiproliferative potential. These essential oils are also categorized as volatile oil, which has been shown to inhibit the growth of various enteric bacteria and the extracellular protease of Salmonella typhimurium. Research specifically utilizing the volatile oil of this plant demonstrates its efficacy as a potential antimicrobial agent through competitive inhibition of enzymes. Additionally, Syzygium samarangense is prepared as a hexane extract to study its medicinal applications in treating diarrhea. This hexane extract contains flavonoids that exhibit dose-dependent spasmolytic and calcium antagonist activity to relax gut contractions.

Parts used

Syzygium samarangense, commonly known as the wax apple, serves as a rich source of unique phytochemical constituents. Recent scientific investigations have focused specifically on the chemical composition of its fresh ripe fruits to uncover potential health benefits. During these studies, researchers successfully isolated a novel 11-carbon δ-lactone derivative named syzysamalactone from the fruit. Alongside this new compound, the known derivative 6-pentyl-α-pyrone was also identified within the fruit's biological matrix. Most notably, these fruit-derived compounds demonstrated significant neuroprotective effects during testing on human neuroblastoma cell lines.