On the lacquered eared-cup unearthed in 1995 from the No. 1 Chu tomb at Guodian, Jingmen, Hubei, there is the inscription “Donggong zhi shi 东宫之币.” Among the characters the “donggong” must refer to the crown pr...On the lacquered eared-cup unearthed in 1995 from the No. 1 Chu tomb at Guodian, Jingmen, Hubei, there is the inscription “Donggong zhi shi 东宫之币.” Among the characters the “donggong” must refer to the crown prince of the Chu state, and the last character, in the light of the characteristics and evolutionary laws of similar phrases in inscriptions on oracle bones and bronzes as well as in those of the Eastern Zhou period, should be deciphered as the word “teacher.” So the whole inscription means the teacher of the Chu crown prince. It can further be inferred that the owner of the tomb might have been the Chu crown prince's teacher, the documents from there were teaching material for the prince, and the tomb and bamboo slips go back to a time earlier than 303 BC.展开更多
Objective: To investigate the composition of volatile compounds in the different accessions of Perilla frutescens(P. frutescens) collected from various habitats of China and Japan. Methods: In the present study, the e...Objective: To investigate the composition of volatile compounds in the different accessions of Perilla frutescens(P. frutescens) collected from various habitats of China and Japan. Methods: In the present study, the essential oil from the leaves of P. frutescens cultivars from China and Japan was extracted by hydro-distillation and the chemical composition and concentration of the volatile components present in the oils were determined by gas chromatography–mass spectrometry(GC–MS) analysis. Results: Among the volatile components, the major proportion was of perilla ketone, which was followed by elemicin and beta-caryophyllene in the Chinese Perilla cultivars. The main component in the oil extracted from the Japanese accessions was myristicin, which was followed by perilla ketone and beta-caryophyllene. We could distinguish seven chemotypes, namely the perilla ketone(PK) type, perilla ketone, myristicin(PM) type, perilla ketone, unknown(PU) type, perilla ketone, beta-caryophyllene, myristicine(PB) type, perilla ketone, myristicin, unknown(PMU) type, perilla ketone, elemicine, myristicin, beta-caryophyllene(PEMB) type, and the perilla ketone, limonene, betacryophyllene, myristicin(L) type. Most of the accessions possessed higher essential oil content before the flowering time than at the flowering stage. The average plant height, leaf length, leaf width of the Chinese accessions was higher than those of the Japanese accessions. Conclusion:The results revealed that the harvest time and geographical origin caused polymorphisms in the essential oil composition and morphological traits in the Perilla accessions originating from China and Japan. Therefore, these chemotypes with desirable characters might be useful for industrial exploitation and for determining the harvest time.展开更多
文摘On the lacquered eared-cup unearthed in 1995 from the No. 1 Chu tomb at Guodian, Jingmen, Hubei, there is the inscription “Donggong zhi shi 东宫之币.” Among the characters the “donggong” must refer to the crown prince of the Chu state, and the last character, in the light of the characteristics and evolutionary laws of similar phrases in inscriptions on oracle bones and bronzes as well as in those of the Eastern Zhou period, should be deciphered as the word “teacher.” So the whole inscription means the teacher of the Chu crown prince. It can further be inferred that the owner of the tomb might have been the Chu crown prince's teacher, the documents from there were teaching material for the prince, and the tomb and bamboo slips go back to a time earlier than 303 BC.
基金supported by funding from the Konkuk University Brain Pool
文摘Objective: To investigate the composition of volatile compounds in the different accessions of Perilla frutescens(P. frutescens) collected from various habitats of China and Japan. Methods: In the present study, the essential oil from the leaves of P. frutescens cultivars from China and Japan was extracted by hydro-distillation and the chemical composition and concentration of the volatile components present in the oils were determined by gas chromatography–mass spectrometry(GC–MS) analysis. Results: Among the volatile components, the major proportion was of perilla ketone, which was followed by elemicin and beta-caryophyllene in the Chinese Perilla cultivars. The main component in the oil extracted from the Japanese accessions was myristicin, which was followed by perilla ketone and beta-caryophyllene. We could distinguish seven chemotypes, namely the perilla ketone(PK) type, perilla ketone, myristicin(PM) type, perilla ketone, unknown(PU) type, perilla ketone, beta-caryophyllene, myristicine(PB) type, perilla ketone, myristicin, unknown(PMU) type, perilla ketone, elemicine, myristicin, beta-caryophyllene(PEMB) type, and the perilla ketone, limonene, betacryophyllene, myristicin(L) type. Most of the accessions possessed higher essential oil content before the flowering time than at the flowering stage. The average plant height, leaf length, leaf width of the Chinese accessions was higher than those of the Japanese accessions. Conclusion:The results revealed that the harvest time and geographical origin caused polymorphisms in the essential oil composition and morphological traits in the Perilla accessions originating from China and Japan. Therefore, these chemotypes with desirable characters might be useful for industrial exploitation and for determining the harvest time.
