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Recently, Zuo et al. (Quantum Inf Process 20:382, 2021) construct the nonlocal sets of tripartite orthogonal product states with less members. Then, how much entanglement resource is sufficient to locally distinguish these states, and very little is known about entanglement-assisted state discrimination in multipartite case. In this paper, with only a 2 ⊗ 2 maximally entangled state, we first prove the orthogonal product states in C d ⊗ C d ⊗ C d can be locally distinguished, where d ⩾ 3 . Then, considering C d ⊗ C d + 1 ⊗ C d + 2 quantum system, we also present that the orthogonal product states are locally distinguishable by using a 2 ⊗ 2 maximally entangled state, where d ⩾ 3 . Finally, we generalize the distinguishing method for general tripartite quantum systems. The above results can let us better understand the role of entanglement resource in quantum information processing, and also reveal the phenomenon of less nonlocality with more entanglement. [ABSTRACT FROM AUTHOR]

• Essential oil profiles were obtained from four Hypericum species. • H. bellum and H. perforatum demonstrated neuroprotective activity. • H. hookerianum and H. bellum oil showed strong antibacterial activity. • H. perforatum collected in Wushan showed tyrosinase inhibition activity. • The study provided a scientific basis for future exploration of Hypericum species. St. John's wort (Hypericum perforatum) is a well-known medicinal plant often used to treat mild to moderate mental depression. In southwest China, four species of Hypericum including H. perforatum , H. hookerianum , H. bellum and H. pseudohenryi have been used as traditional medicines for skin care, such as healing wounds, burns, and snake bites by local people. Hypericum volatile oils of these four species were obtained by supercritical CO 2 extraction and analyzed by GC–MS. From H. perforatum , 56 compounds were identified, the amounts of marker components are different between two collection sites. From H. hookerianum , 71 compounds were identified, mainly comprised of alkanes. From H. bellum , 43 compounds were identified, and its essential oil contains mainly oxygenated sesquiterpenoids. From H. pseudohenryi , 57 compounds were identified, and the essential oil has relatively high levels of alkanes. Because Hypericum species are used traditionally to treat depression, wounds, and other skin problems, their volatile oils were evaluated in vitro for neurite outgrowth-promoting, neuroprotective, antimicrobial, and enzyme inhibitory activities. H. bellum and H. perforatum from Wushan demonstrated significant neurite-promoting and neuroprotective activity. The Gram-positive Staphylococcus aureus ssp. aureus was inhibited by most of the tested oils. Sesquiterpenoids and alkanols are the most abundant constituents of H. hookerianum and H. bellum oils which showed strong antibacterial activity and help to explain the observed antimicrobial activity of the oil. H. perforatum collected in Wushan showed tyrosinase inhibition activity. Based on the current results, three Asian Hypericum species and two Chinese H. perforatum populations may be promising ingredients for cosmetics, foods, and pharmaceuticals. [ABSTRACT FROM AUTHOR]