No abstract

Seasonal variations in contents of bioactive markers in Australian-grown Salvia miltiorrhiza roots were investigated in a two-year field trial. Cryptotanshinone, tanshinone I, tanshinone IIA, and salvianolic acid B were quantitatively determined by reversed-phase (RP) HPLC. Similar accumulation patterns were observed for the three tanshinones throughout the trial period, although roots harvested in the first year was found to contain relatively higher contents of these compounds. In contrast, the content of salvianolic acid B was peaked at 250 days after planting in the first year, and subsequently maintained at a plateau level in the second-year period. Linear correlations between the contents of individual tanshinones were observed, but not between those of tanshinones and salvianolic acid B. The findings suggest that tanshinones and salvianolic acid B have different accumulation patterns in Australian-grown Salvia miltiorrhiza roots, which should be critically considered for optimum harvesting of the roots for pharmaceutical applications.

The commercial application of big data has been gradually under progress in various industries. As one of the significant elements in tourism industry, it concerns whether the hoteliers can secure a competitive advantage. The mining of the data on customers is conducive to the analysis of the behaviors and consuming preferences of customers, which can improve the living experience and satisfaction degree of customers effectively, in an effort to realize the profit of the hotel. J.W. Marriott and The Ritz-Carlton, representatives of the subordinate grand-level hotels in China of Marriott International, are selected as the research targets. This study adopts an qualitative approach. We will have an in-depth interview with managers of the five main sections in each of the hotels, with the purpose of analyzing the tendency of the data use related to customers and its application level. In the light of the obtainment channel and actual application of big data of Marriott in China, it can judged that the hotel mainly appliesthe big data mainly to such aspects as sales of product, social media and online behavior of customers, offline data. In the end, on the basis of the case study, we can reach a conclusion that the commercial application of data in the hospitality industry will provide great assistance for hotel managers in formulating correct strategies of management and marketing.

Danshen (Salvia miltiorrhiza Bunge, Lamiaceae) is a commonly used and highly valued Chinese medicinal herb grown widely in China. In the present work, we studied cultivar variations of Australian-grown Danshen in order to select optimal cultivars for local herbal production. Root yields of seven cultivars, V1-V7, were monitored in a one-year field trial, and bioactive markers, including cryptotanshinone, tanshinone I, tanshinone IIA, and salvianolic acid B, were quantitatively determined using a validated RP-HPLC method. Significant variations were found in root yields, root production efficiencies, and contents of the bioactive marker compounds. Linear correlations were observed among the contents of three tanshinones but not among those of tanshinones and salvianolic acid B. Among the cultivars, V6 was the best cultivar for production of tanshinones, and V4 and V5 were best for production of salvianolic acid B. The findings indicate that it is possible to achieve optimal root yields, and high contents of tanshinones and salvianolic acid B by selecting specific Danshen cultivars.