Antibacterial activity from soft corals of the Red Sea, Saudi Arabia

This paper concerns a probable shipwreck cargo of Aqaba amphorae, which was discovered during the second season of the survey project along the Saudi Arabian coast, initiated by nautical archaeologists of Philipps-University Marburg and conducted in cooperation with members of the Saudi Commission for Tourism and Heritage in autumn 2013. Seafaring and sea trade was, according to the few ancient sources and modern research activities, a hazardous endeavor in antiquity. Transport containers like the Aqaba Amphorae played a major role in sea trade, a significant number of which have been detected on various sites along the Red Sea coast and its hinterland. The chronological classification as well as the application is far from complete, and recent archaeometrical investigations help to clarify the logistical aspects of manufacturing and distribution of Aqaba amphorae. Finding a number of remains of Aqaba amphorae at a supposed shipwreck site close to Jeddah delivers new insight into the maritime routes and activities along the western coast of Saudi Arabia. The documentary material currently available is the baseline for further research in the field of maritime archaeology as it pertains to trade in the Red Sea.

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A Nabatean port on the Red Sea: note on the pottery finds from al-Qusayr (al-Wajh, Saudi Arabia)

10.31338/uw.2083-537x.pam29.1.23 ◽

2020 ◽

Author(s):

Caroline Durand

Keyword(s):

Saudi Arabia ◽

19Th Century ◽

Red Sea ◽

Point Of View ◽

The Other ◽

Trade Routes ◽

Other Hand ◽

Roman Egypt ◽

Pottery Sherds ◽

First Time

Al-Qusayr is located 40 km south of modern al-Wajh, roughly 7 km from the eastern Red Sea shore. This site is known since the mid-19th century, when the explorer R. Burton described it for the first time, in particular the remains of a monumental building so-called al-Qasr. In March 2016, a new survey of the site was undertaken by the al-‘Ula–al-Wajh Survey Project. This survey focused not only on al-Qasr but also on the surrounding site corresponding to the ancient settlement. A surface collection of pottery sherds revealed a striking combination of Mediterranean and Egyptian imports on one hand, and of Nabataean productions on the other hand. This material is particularly homogeneous on the chronological point of view, suggesting a rather limited occupation period for the site. Attesting contacts between Mediterranean merchants, Roman Egypt and the Nabataean kingdom, these new data allow a complete reassessment of the importance of this locality in the Red Sea trade routes during antiquity.

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PHYTOCHEMICAL STUDIES ON ULVA LACTUCA (L.) THURET FROM RED SEA COAST OF JEDDAH, SAUDI ARABIA

Egyptian Journal of Phycology ◽

10.21608/egyjs.2007.114562 ◽

2007 ◽

Vol 8 (1) ◽

pp. 185-194

Author(s):

Zeinab El Sewafy ◽

Naseem Radi

Keyword(s):

Saudi Arabia ◽

Red Sea ◽

Ulva Lactuca ◽

Red Sea Coast ◽

Phytochemical Studies ◽

Sea Coast

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Annotated list to the flora of Farasan Archipelago, Southern Red Sea, Saudi Arabia

Taeckholmia ◽

10.21608/taec.2002.12388 ◽

2002 ◽

Vol 22 (1) ◽

pp. 1-33 ◽

Cited By ~ 6

Author(s):

Ahmed Alfarhan ◽

Turki Al-Turki ◽

Jacob Thomas ◽

R. Basahy

Keyword(s):

Saudi Arabia ◽

Red Sea ◽

Annotated List

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Evaluation of antioxidant enzyme content, phenolic content, and antibacterial activity of Commiphora gileadensis grown in Saudi Arabia

Main Group Chemistry ◽

10.3233/mgc-200969 ◽

2021 ◽

Vol 19 (4) ◽

pp. 329-343

Author(s):

Yaaser Q. Almulaiky ◽

Ammar AL-Farga

Keyword(s):

Antibacterial Activity ◽

Saudi Arabia ◽

Oral Hygiene ◽

Leaf Extract ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Scavenging Activity ◽

Reference Drug ◽

Wide Range ◽

Peel Extract

Commiphora gileadensis is commonly used in Saudi Arabia for oral hygiene. A lack of data about its biological activity encouraged us to evaluate the antioxidant and antibacterial activities of its leaf and stem extracts. Ethanol, methanol, acetone and deionized water were tested as extraction solvents. 80% methanol gave the highest extracted concentrations of phenolic and flavonoid substances. The leaf and stem extracts were respectively evaluated for their radical scavenging activity with DPPH (EC50 = 3.39, and 1.06), ABTS (EC50 = 0.690, and 0.55), and peroxide scavenging activity (EC50 = 2.43, and 1.28). GC-MS identified a wide range of compounds that may be responsible for these activities of the results observed. The highest levels of chlorophyll, carotenoids, and lycopene were found in the leaf extract while level of proanthocyanidins was found in the stem peels extract. The peroxidase and catalase activities of stem peel extract were higher than those of the leaf extract. The findings showed that the leaf and stem peel extracts of C. gileadensis exhibited significant antibacterial activity against the test organisms. The minimum inhibitory concentrations for the plant extracts were compared with the standard reference drug Augmentin but the time–kill curves for the C. gileadensis extracts showed that they were less effective than Augmentin. Moreover, the stem peel extract exhibited stronger antibacterial activity than the leaf extract. In conclusion, C. gileadensis can be an important source of natural antioxidants, used as a healthy chewing stick for teeth brushing and oral hygiene purposes.

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