## 4 Conclusions and Future Research  
To extract effective compounds from _C. myrrha_ (T.Nees) Engl. resin, various solvents with different polarities and dielectric constants were used as extraction solvents. Among the _C. myrrha_ (T.Nees) Engl. resin extracts prepared, the methanolic extract showed significant antibacterial activity against Gram-positive bacteria. This may be due to the distinct solvent properties, which lead to the extraction of different effective compounds. Particularly, the extract prepared by soaking in methanol exhibited anti-inflammatory activity at non-cytotoxic concentrations. According to the results of the component analysis using HPLC and GC-MS, the extracts contained various polyphenols (e.g., tannic acid, rutin, and quercetin) and terpenoids (e.g., furanoedesma-1,3-diene and curzerene), which are known to have antibacterial, anti-inflammatory, and antiviral effects. Furthermore, novel biochar-based materials used to introduce the functionality of _C. myrrha_ (T.Nees) Engl. resin extracts for the investigation of antiviral activity were fabricated using a simple adsorption process. The _C. myrrha_ (T.Nees) Engl. resin extract-coated biochars, which adsorbed terpenoids, showed antiviral activity against the H1N1 influenza virus, along with extracts that existed in the liquid state. Therefore, biochar coated with methanolic _C. myrrha_ (T.Nees) Engl. resin extracts suggest the possibility of using natural-derived substances in various fields (e.g., purification, agriculture, pharmaceuticals, cosmetics, and food packaging) as they are fabricated as novel materials via the adsorption of effective compounds. In future research, there are many interesting issues that should be considered. It is worth studying the relationship between antiviral compounds and viruses. Firstly, _C. myrrha_ (T.Nees) Engl. resin extracts for antiviral activity against the H1N1 influenza virus will be evaluated in more detail including CPE (cytopathic effect), Western blotting, and so on. Also, the comparison of antiviral agents and _C. myrrha_ (T.Nees) Engl. resin extracts for antiviral activity against the H1N1 influenza virus and the evaluation of _C. myrrha_ (T.Nees) Engl. resin extracts for antiviral activity against other viruses will be applied. In addition, exploring the application of biochar is a very challenging topic. Hence, the adsorption capacity of the antibacterial and antiviral compounds in _C. myrrha_ (T.Nees) Engl. resin extracts onto various biochars (rice husk, wood, grass, sludge, microalgae, etc., -based biochars) will be explored in more detail. To evaluate the adsorption of compounds onto biochar, the kinetic and isotherm studies will be analyzed. The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app131810549/s1](https://www.mdpi.com/article/10.3390/app131810549/s1)]([https://www.mdpi.com/article/10.3390/app131810549/s1](https://www.mdpi.com/article/10.3390/app131810549/s1)), Table S1: Brunauer-Emmett-Teller (BET) surface areas of the RH-BC and WD-BC; Figure S1: HPLC spectra of authentic polyphenols for polyphenol analysis; Figure S2: Inhibitory effects of RH-BC (A) without _C. myrrha_ (T.Nees) Engl. resin extracts and RH-BC (B) coated with _C. myrrha_ (T.Nees) Engl. resin extracts against the H1N1 influenza virus using plaque assay; Figure S3: GC-MS spectra of _C. myrrha_ (T.Nees) Engl. resin extracts for terpenoid analysis; Figure S4: FTIR spectra of RH-BC and WD-BC before _C. myrrha_ (T.Nees) Engl. resin extract adsorption. J.W.K., methodology, formal analysis, writing--original draft preparation; S.P., formal analysis, writing--original draft preparation; Y.W.S., resources, data curation; H.J.S., methodology, data curation; S.W.Y., methodology; J.H., data curation; J.W.J., formal analysis; I-S.L., data curation; S.H.L., writing--review and editing; Y.-K.C., conceptualization, writing--original draft preparation, supervision; and H.J.K., conceptualization, writing--original draft preparation, supervision.