We collected wild mushroom, Sarcodon aspratus from Deogyu Mt. of Muju, Jeollabuk-do and physiological functionalities of its water extract were investigated. The water extracts from S. aspratus showed the highest antihypertensive angiotensin I-converting enzyme (ACE) inhibitory activity of 74.3% and also showed high antigout xanthine oxidase (XOD) inhibitory activity (59.6%). However, tyrosinase inhibitory activity was very low (17.3%), and antioxidant activity and SOD-likely activity were not detected. The ACE inhibitory activity of S. aspratus fruiting body was the highest when powder of the fruiting body was shaked at 30 o C for 24 h by distilled water. Furthermore, the XOD inhibitory activity was also the highest by extraction at 50 o C for 24 h with water.
Cirsium setidens Nakai, a wild perennial, is widely consumed as a food and traditional medicine in Korea. In addition, diverse functionalities of C. setidens Nakai, including anti-inflammatory and antioxidant effects, have been reported. However, whether or not C. setidens Nakai and its major compound, pectolinarin have high nutritional value and functional properties remains unknown. This paper investigated the proximate compositions, mineral contents, hepatoprotective activities, hepatic fat accumulation inhibitory activities, and anti-inflammatory and anti-oxidant activities of C. setidens Nakai and its component parts, including of pectolinarin. The result showed that C. setidens Nakai and its major compounds have potential as a functional food material with natural antioxidant and anti-inflammatory activities.Key words: Cirsium setidens Nakai, nutritional components, antioxidant activity, pectolinarin, functional material
In October 2011, a commercialized 100kW class floating photovoltaic system positive plant was installed at Hapcheon dam a multi-purpose reservoir the first time ever in the nation. Floating photovoltaic system differs in water float, mooring device and underwater cable process from land photovoltaic system. As for land and building photovoltaic power generation equipments, many installation cases and skilled experiences are available, and thus installation is not difficult. However, commercial power generation floating photovoltaic system, which is attempted for the first time in the nation, requires to be designed and installed through a series of processes like technical review and verification of data by process in comparison with similar cases. The structure of floating photovoltaic system, an equipment for float photovoltaic module and other electrical equipment, is required to withstand weather environments like wind or typhoon etc and yet not affect water quality negatively, and for implementation of this system, construction efficiency and economy etc should be considered comprehensively. In this paper, the techniques of installing floating photovoltaic structure, mooring device, underwater cable, electrical equipment and remote monitoring control system are explained. The 100kW floating PV system is operating with 15% average capacity factor
The present study was performed to quantitatively analyze eleutherosides (B and E) and β-glucan in different plant parts of three cultivars (Chungnam, Gangwon, and Jeju) of Acanthopanax senticosus and Acanthopanax koreanum using HPLC and a commercial enzyme kit. Our results showed high linearity in the calibration curves as the coefficients of correlation (R 2 ) were 0.998 (eleutheroside B) and 0.999 (eleutheroside E), respectively. Eleutheroside B and E were found in stem extracts of A. koreanum cultivated in Jeju (1,122 μg/g, eleutheroside B) and A. senticosus cultivated in Chungnam (2,536 μg/g, eleutheroside E), respectively. However, eleutheroside B was not detected in any part of A. senticosus cultivated in Chungnam. For β-glucan contents, stems of A. senticosus and A. koreanum showed higher than other parts. Furthermore, the β-glucan content in stems of A. koreanum cultivated in Gangwon was significantly higher than in those of other cultivars. These results show that the contents of eleutheroside B, E, and β-glucan were higher in stem extracts of A. senticosus and A. koreanum than other parts. Moreover, our results suggest that the contents of eleutheroside B, E, and β-glucan in A. senticosus and A. koreanum are influenced by cultivation area and the selected part.
Key words: Acanthopanax senticosus, Acanthopanax koreanum, eleutheroside B, eleutheroside E, β-glucan
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