Introduction: Medicinal herbs Acorus calamus, Curcuma longa, Zingiber officinale, and Piper betle have been traditionally used for treating stomach-related conditions such as irregular bowel movement, bloating, and gastric ulcers. The present study aimed to explore current status, research trends, and future directions of these herbs as functional herbal teas in prevention and treatment of gastritis. Methods: A total of 80 articles from Scopus database were retrieved and reviewed. Research trends were quantitatively analysed using VOSviewer software, focusing on the keywords, authors, countries, journals, and documents. A narrative review was integrated to provide comprehensive insights into the study. Results: Analysis revealed China and India as driving forces of this specific area of research, with the Journal of Ethnopharmacology emerging as a prominent source for publications in this field. “Curcumin”, “ginger”, and “Helicobacter pylori” were the main keywords of the study. Several gastroprotective mechanisms, including stimulation of mucosal proliferation, regulation of gastric acid production, reduction of inflammation in the gastric mucosa, protection of the gastric mucosa from oxidative damage, and inhibition of the growth of H. pylori, were associated with these herbs. Active compounds, such as α-asarone, curcumin, gingerol, and piperbetol, were found to be responsible for these effects. Conclusion: This study highlights various gastroprotective properties of A. calamus, C. longa, Z. officinale, and P. betle, providing researchers with a deeper understanding of the subject matter and opening new avenues for potential development into a functional herbal tea formulation known as “Lega Tea” (Relief Tea).

Introduction: Coconut sap is a sweet, fragrant liquid obtained from the inflorescence of coconut tree. In this study, a literature search was conducted using the Scopus database to study the trends of coconut sap research. Methods: Data extracted from the Scopus database were analysed and visualised using VOSviewer to determine top authors, papers, countries, collaborations, and research areas. A total of 76 publications up to year 2021 were identified and refined using keywords of “coconut sap”, “coconut sugar”, “coconut inflorescence”, “coconut inflorescence sap”, “coconut neera”, and “Cocos nucifera”. Results: Based on the analysis, research on coconut sap started in 1984, with a total of 53 authors, nine countries, and 12 sources that had published more than two documents. The analysis of countries and sources revealed that India and IOP Conference Series: Earth and Environmental Science (EES) were the most prolific country and sources, respectively. The most influential document was on the chemical compositions and bacteriology of coconut sap. The results also showed that research on coconut sap was in the field of food processing during the early years, followed by fermentation, agriculture, and bacteriology of coconut sap. Research on coconut sap’s bacteriology started in 1986 and became a major interest, especially among high impact journals. Conclusion: Overall, coconut sap is a potential target for the development of nutraceutical products, especially in the food and beverage industry.