Profiling of Volatile Organic Compounds in Wild Indigenous Medicinal Ginger (Zingiber barbatum Wall.) from Myanmar

Ethnobotanical surveys reveal the crucial role of medicinal plants in the primary healthcare system of the Shan people in Myanmar

ETHNOPHARMACOLOGICAL RELEVANCE

The Shan people of Myanmar live under conditions of longtime social instability and public medical resources inadequate, which tend to strengthen the reliance on local traditional primary healthcare system. The documentation of this kind of resource, however, was rarely and inadequate to support any kind of dynamic trend evaluation. Being an ethnobotanical study, we conducted field survey in the Southern Shan State of Myanmar and aimed to 1) document the local plant species that adopted for primary healthcare purpose, 2) clarify how these species collectively address the broad range of primary medication needs for local people, and 3) lay foundation for dynamic trend evaluation of the role of local medicinal plants under this kind of social and cultural context.

MATERIAL AND METHODS

Field surveys were conducted with 124 informants in eight villages. We collected 1259 use reports and documented all the plant species used for treating all the mentioned ailment types. The ailments were translated into their emic meaning and then classified into common disease categories. The top ranked and newly recorded plants or ailment types were analyzed based on historical records from the region.

RESULTS

Totally 156 plant species were used for treating 91 ailments belonging to 16 disease categories, with skin problems and digestive tract were the top cited diseases, and with Fabaceae and Lamiaceae were the top cited plant families. A total of 19 newly recorded plant species were suggested as new member of Myanmar medicinal plant list. Besides, we filled the gaps (for 24 species) and enriched the types (for 83 species) of applicable ailments for known Myanmar medicinal plants.

CONCLUSION

Our study revealed that the Shan people in Southern Shan State used rich plant species for various therapeutic purposes. Our findings indicate the crucial role of local plant resources for local people's primary healthcare needs and support further study about cultural or regional comparation or historical dynamic trend of the medicinal plants uses in areas facing longtime official or public medical resource inadequate.

Exploring Volatile Organic Compounds in Rhizomes and Leaves of Kaempferia parviflora Wall. Ex Baker Using HS-SPME and GC-TOF/MS Combined with Multivariate Analysis

Volatile organic compounds (VOCs) play an important role in the biological activities of the medicinal Zingiberaceae species. In commercial preparations of VOCs from Kaempferia parviflora rhizomes, its leaves are wasted as by-products. The foliage could be an alternative source to rhizome, but its VOCs composition has not been explored previously. In this study, the VOCs in the leaves and rhizomes of K. parviflora plants grown in a growth room and in the field were analyzed using the headspace solid-phase microextraction (HS-SPME) method coupled with gas chromatography and time-of-flight mass spectrometry (GC-TOF-MS). The results showed a total of 75 and 78 VOCs identified from the leaves and rhizomes, respectively, of plants grown in the growth room. In the field samples, 96 VOCs were detected from the leaves and 98 from the rhizomes. These numbers are higher compared to the previous reports, which can be attributed to the analytical techniques used. It was also observed that monoterpenes were dominant in leaves, whereas sesquiterpenes were more abundant in rhizomes. Principal component analysis (PCA) revealed significantly higher abundance and diversity of VOCs in plants grown in the field than in the growth room. A high level of similarity of identified VOCs between the two tissues was also observed, as they shared 68 and 94 VOCs in the growth room and field samples, respectively. The difference lies in the relative abundance of VOCs, as most of them are abundant in rhizomes. Overall, the current study showed that the leaves of K. parviflora, grown in any growth conditions, can be further utilized as an alternative source of VOCs for rhizomes.

Healthy Zerumbone: From Natural Sources to Strategies to Improve Its Bioavailability and Oral Administration

Zerumbone is a multifunctional compound with antimicrobial, antitumor, hyperalgesic, antioxidant and anti-inflammatory applications, and constitutes a point molecule for the future synthesis of derivatives with improved efficiency. This monocyclic sesquiterpenoid is found in high content in wild ginger (Zingiber zerumbet Smith), a perennial herb with economic importance as an ornamental as well as a medicinal plant. The presence of zerumbone is a distinctive feature that allows identification and differentiation from other species, not only in Zingiber, but also in Curcuma, Alpinia, Boesenbergia, Ethlingera and Ammomum spp., as well as related families (Costaceaee). To successfully use zerumbone in areas such as medicine, food and agriculture, further research on improving its low solubility and bioavailability, as well as its preservation, is a major current priority. In addition, despite its promising pharmacological activities, preclinical and clinical studies are required to demonstrate and evaluate the in vivo efficacy of zerumbone.

A sense of ginger fraud: prevalence and deconstruction of the China-European union supply chain

As an important spice, ginger has been widely distributed in the Chinese and the European Union (EU) markets, the two largest trading areas, in various forms. The ginger supply chain between China and the EU is long and complex, providing opportunities for fraudsters to deceive consumers. However, limited attention has been given to food fraud in ginger, and there is a lack of research on this topic. In this review, ginger was used as an example for interpreting the fraud issues within low-priced and high-trade volume spice products. This review aims to summarize the open access information from food and food fraud databases, literature, and stakeholders about ginger fraud, and to map, deconstruct and analyse the food fraud vulnerability in the supply chain. In addition, potential testing strategies to detect ginger fraud were also discussed. The investigation of food fraud databases, a semi-structured literature review and online interviews with stakeholders revealed that adulteration is the major fraud type in ginger products. And the most vulnerable ginger products are ground ginger and finely processed ginger. The ginger supply chain from China to the EU comprises nine stages and is medium vulnerable to food fraud, both in regard to opportunities and motivational drivers. To ensure the integrity of the ginger supply chain, there is a need to apply fraud vulnerability tools in the companies of the industry. In addition, screening and confirmatory techniques based on the characteristics of ginger should be utilised for monitoring fraud issues in the supply chain.