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한국의 논 토양 미생물 다양성 분석을 위한 Quantitative Real-time PCR의 응용
최명은 ( Myeong Eun Choe ),이인중 ( In Jung Lee ),신재호 ( Jae Ho Shin ) 한국환경농학회 2011 한국환경농학회지 Vol.30 No.4
BACKGROUND: In order to develop effective assessment method for Korean paddy soil microbial community structure, reliable genomic DNA extraction method from paddy soil and quantitative real-time PCR (qRT-PCR) method are needed to establish METHODS AND RESULTS: Out of six conventional soil genomic DNA extraction methods, anion exchange resin purification method was turn to be the most reliable. Various PCR primers for distinguishing five bacterial phylum (a-Proteobacteria, β-Proteobacteria, Actinobacteria, Bacteroidetes, Firmicutes), all bacteria, and all fungi were tested. Various qRT-PCR temperature conditions were also tested by repeating experiment. Finally, both genomic DNA extraction and qRT-PCR methods for paddy soil were well established. CONCLUSION: Quantitativereal-timePCR(qRT-PCR)method to assess paddy soil microbial community was established.
최명은(Choe Myeong-Eun),김정인(Kim Jung-In),정태욱(Jung Tae-Wook),곽도연(Kwak Do-Yeon),김기영(Kim Ki-Young),고지연(Ko Jee-Yeon),우관식(Woo Koan-Si),송석보(Song Seok-Bo),정기열(Jung Ki-Youl),오인석(Oh In-Seok) 한국육종학회 2016 한국육종학회지 Vol.48 No.2
‘Nampungchal’ is a Sorghum bicolor L. developed and registered by Department of Sothern area crop science, NICS, RDA in 2012. This variety was developed through pure line breeding method from ‘Namhae’ landrace. ‘Nampungchal’ is a medium maturing variety having 68 days from planting to heading of sorghum in Miryang, Korea. The plant is pigmented(purple), the glumes and grains are red-brown with waxy endosperm. The panicle has less compact shape and the length is 23cm. The grain yield of ‘Nampungchal’ is about 2.28MT/ha that is higher 9%, when compared with standard variety ‘Hwanggeumchal’. Culm length and width are about 142 cm and 20.2 cm, respectively. It could be reduce the lodging problem by thicker stems and also adapted to mechanized cultivation. ‘Nampungchal’ does produce high quantities of polyphenol and tannin contents with DPPH radical scavenging activity in pigmented testa. The object of this breeding program is improvement for mechanized production with high yield potential, lodging resistant, and responsive to favorable environmental conditions.
조 배유 특성별 분말 즉석 죽의 품질 특성 및 항산화 활성
고지연,송석보,최명은,우관식,최지명,곽도연,김기영,정태욱,고종철,오인석,Ko, Jee Yeon,Song, Seuk Bo,Choe, Meyong Eun,Woo, Koan Sik,Choi, Ji Myeong,Kwak, Do Yeon,Kim, Ki Yong,Jung, Tae Wook,Ko, Jong Cheol,Oh, In Seok 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.4
영양 및 기능성이 높은 조의 다양한 수요 창출을 위하여 배유 특성이 다른 조를 대상으로 분말 즉석 죽을 제조하고, 이화학적 특징 및 조리 특성 등의 품질과 항산화 활성의 생리활성을 평가하였다. 대상으로 사용한 조 원료곡은 메조 삼다메, 차조 삼다찰을 사용하였고, 물만 부어 바로 섭취할 수 있도록 전분의 호화 후 노화를 막는 가공처리로서 1) 건조곡 볶음, 2) 수침곡 볶음, 3) 찐 후 급속냉동, 4) 팽화처리하고 대조로 5) 원곡을 사용하였다. 재료의 수분 흡착능을 알아보는 WAI는 팽화처리에서 가장 높았으며, 원료곡에 따라서는 차조가 높았다. 즉석 죽 가루의 RVA 특성은 메조의 경우, 가공처리 후 전체적으로 점도 및 setback이 저하되어 열과 수분에 안정적으로 나타났다. 차조는 가공 처리된 즉석 죽을 재호화함에 따라 점도가 크게 증가하였다. 즉석 죽 가루에 뜨거운 물에 부었을 때의 점도는 건조곡 볶음가루 죽은 원료곡 가루죽과 점도 차이가 크게 없었고, 메조는 팽화처리, 차조는 찐 후 냉동건조, 수침곡 볶음 및 팽화처리 분말에서 즉석 죽으로 이용하기에 충분한 점성을 지닌 것으로 판단되었다. 항산화 성분인 폴리페놀 함량 및 ABTS 라디컬 소거능은 찐 후 냉동건조를 제외하고는 가공처리에 의해 뚜렷이 증가하였으며, 가공처리 중에는 팽화처리 시 원료곡 폴리페놀 함량 및 ABTS 라디컬 소거능의 1.5배, 1.7배로 가장 증가가 컸다. 배유 특성 및 가공처리별 즉석 죽의 관능검사 결과, 메조 삼다메를 팽화처리한 분말 즉석 죽의 기호도가 가장 높았으며, 뜨거운 물에도 엉김 현상 없이 잘 녹아 가공적성이 우수하였다. 따라서, 죽의 점도 및 수분흡착능은 차조 삼다찰이 높았으나, 항산화 활성, 열과 수분에 대한 안정성, 기호도 및 물에 풀었을 때 엉김 현상을 고려할 경우, 메조 삼다메가 더 우수하였으며, 가공처리방법으로는 팽화처리가 모든 항목에서 가장 우수하였다. This study was conducted in order to investigate the antioxidant capabilities and quality characteristics of instant porridge made of foxtail millet (Setaria italica Beauv.) from different varieties with different endosperm characteristics and processing using different methods. The two foxtail millet varieties used in this study were waxy foxtail millet, 'Samdachal', and non-waxy foxtail millet, 'Samdame'. The means of processing food to create instant porridge were dry cereal frying, wet cereal frying, freeze drying after steaming, popping, and no treatment. The WAI (water absorption index) of instant porridge made of waxy foxtail millet was higher than that of non-waxy foxtail millet, and popping created the highest WAI among the treatments tested. Whean we analyzed RVA characteristics of non-waxy foxtail millet instant porridge, peak viscosity and setback values were decreased in all processed foxtail millet instant porridge compared to non-waxy foxtail millet instant porridge. In waxy foxtail instant porridge, the peak and final viscosities of processed treated instant porridge increased. The viscosity just after pouring hot water into the instant porridge was higher in waxy foxtail millet porridge treated by freeze drying after steaming, popping, and wet cereal frying; the viscosity of non-waxy foxtail porridge was increased after popping as compared with the other treatments. The polyphenol contents and antioxidant activities were increased in all processed, treated-instant porridge except for freeze dried porridge after steamingnt. The popping treatment showed the highest polyphenol contents (1.5 fold), and ABTS antioxidant activity (1.2 fold), compared to no treatment. Non-waxy foxtail millet porridge produced by popping earned the highest sensory evaluation scores.
고지연(Ko Jee Yeon),송석보(Song Seok Bo),최명은(Choe Meyong Eun),곽도연(Kwak Do Yeon),최지명(Choi Ji Myeong),우관식(Woo Koan Sik),윤건식(Yoon Gun Sik),최규환(Choi Gyu Hwan),김용순(Kim Yong Soon) 한국육종학회 2018 한국육종학회지 Vol.50 No.3
‘Geumsilchal’ is a Proso millet (Panicum miliaceum L.) variety developed and registered by the Department of Southern Area Crop Science, NICS, RDA, in 2014. This variety was developed through pure line selection from K131247. ‘Geumsilchal’ was an erect type medium-maturing variety. Its growing period was 104 days when it was seeded on May 15, and 94 days when it was seeded on July 15 in Milyang, Korea. The culm length of ‘Geumsilchal’ was about 123 cm, which was 13 cm longer than that of the standard variety ‘Hwanggeumgijang’. ‘Geumsilchal’ was tolerant to lodging in the field because of its wide column width and erect plant type. The panicle type was droopy and its length was about 23 cm. Seed grain and dehusked grains were yellow, and the endosperm characteristic was glutinous. The yield potential of ‘Geumsilchal’ was about 2.41 ton ha⁻¹ in regional yield trials from 2013 to 2014 and was 27% higher than that of the standard variety ‘Hwanggeumgijang’ (Variety registration No. 6247).
수수 품종에 따른 이화학적 특성, 기능 성분 및 생리활성
김현주(Hyun-Joo Kim),우관식(Koan Sik Woo),이진영(Jin Young Lee),최명은(Myeong Eun Choe),이해림(Haelim Lee),이유영(Yu-Young Lee),이병원(Byong Won Lee),김미향(Mihyang Kim),강문석(Moon Suk Kang) 한국식품영양과학회 2020 한국식품영양과학회지 Vol.49 No.12
본 연구에서는 국내 육성 수수의 식품 및 공중보건산업 소재로서의 이용 다양화를 위한 기초자료를 확보하고자 수수 품종별 이화학적 특성 및 기능 성분을 분석하고, 수수를 에탄올로 추출한 후 생리활성을 비교하였다. 수수의 수분 및 회분 함량은 각각 9.72~10.17%, 1.89~2.24% 범위로 나타났다. 조단백질 및 조지방 함량은 각각 9.26~10.70%, 3.12~4.54%의 범위로 남풍찰이 다른 품종에 비해 높았다. 식이섬유 함량은 동안메가 7.88%로 다른 품종에 비해 높았다. 총 전분 함량은 66.87~68.40% 범위였으며, 아밀로스 함량은 찰성인 남풍찰, 소담찰이 각각 5.66%, 6.06%로 동안메 23.92%보다 낮은 함량을 보였다. 수수의 수분 결합력은 119.36~138.82% 범위로 나타났으며 동안메가 다른 품종에 비해 높았다. 용해도는 6.29~13.93% 범위였고 팽윤력은 6.69~8.93% 범위로 나타났으며 동안메(8.93%)가 가장 높았다. 호화 특성 분석 결과 값이 높을수록 식미가 양호한 강하점도가 소담찰이 다른 품종에 비해 높은 값을 보였다. 치반점도는 -85.08~89.89 RVU 범위였다. 수수 품종별 GABA 함량을 분석한 결과 동안메가 115.87 ㎎/g으로 남풍찰, 소담찰보다 높은 함량을 보였으며 phytic acid 함량은 남풍찰이 1.79 g/100 g으로 높았다. 총 폴리페놀 함량의 경우 동안메가 171.86 ㎎/g extract로 다른 품종에 비해 높은 값을 보였다. 항산화 활성의 지표로 활용할 수 있는 FRAP 값을 측정한 결과 541.48~990.82 mM의 범위로 소담찰이 가장 높은 값을 보였으며, α-glucosidase 저해 활성은 소담찰 98.27%, 동안메 96.98%, 남풍찰 89.75% 순으로 나타났다. 미백 활성 소재로 검토하기 위해 분석한 tyrosinase 저해 활성은 동안메가 62.16%로 가장 높았다. 호화 특성, 기능 성분 및 생리활성 등의 결과를 볼 때 수수 세가지 품종 중 동안메와 소담찰이 기능성 소재로서의 활용성이 높을 것으로 판단된다. 아울러 본 연구 결과는 수수를 식품 및 공중보건산업 소재로 활용하기 위한 기초자료로 활용이 가능할 것으로 생각되며, 추후 활용 목적에 따라 동안메 및 소담찰 품종의 기능 성분과 메커니즘 구명에 대한 연구가 추가적으로 요구된다. This study investigated the physicochemical properties, functional components, and of sorghum cultivars, to select a good cultivar for use in the food processing and cosmetic industries. The moisture, crude protein, lipid, ash, total dietary fiber, total starch, and amylose content of sorghum ranged from 9.72∼10.17%, 9.26∼10.70%, 3.12∼4.54%, 1.89∼2.24%, 4.73∼7.88%, 66.87∼68.40%, and 5.66∼23.92%. The binding capacity, water solubility, and swelling power were greatest in Donganme. An analysis of the pasting properties revealed Sodamchal had a high breakdown value. The γ-aminobutyric (GABA) and phytic acid contents of the sorghum cultivars were 17.57∼115.87 ㎎/g and 0.88∼1.79 ㎎/100 g, respectively. The total polyphenol content of the Donganme, Nampungchal, and Sodamchal cultivars were 171.86, 76.54, and 156.34 ㎎/g, and the ferric reducing antioxidant power (FRAP) was 933.98, 541.48, and 990.82 mM/g, respectively. The α-glucosidase inhibit activity was 96.98, 89.75, and 98.27%, and the tyrosinase inhibit activity was 62.16, 61.64, and 61.90%, respectively. The total phenol content and physiological activities of sorghum, especially Donganme and Sodamchal, were high and these cultivars be used as a functional material.
윤건식(Geon-Sig Yun),이재웅(Jae-Wung Lee),황세구(Se-Gu Hwang),김익제(Ik-Jei Kim),홍성택(Seong-Taeg Hong),최명은(Myeong-Eun Choe),최규환(Gyu-Hwan Choi),김용순(Yong-Soon Kim),김홍식(Hong-Sig Kim) 한국육종학회 2019 한국육종학회지 Vol.51 No.4
To improve their income, farmers should cultivate sorghum varieties with high productivity, short breeding period, and easy double cropping. To increase purchases by consumers, the sorghum variety must have health-related functions. To meet these demands, the Cheongpung variety has been raised through net separation from the traditional species of the Chungbuk region as a sorghum variety that can be harvested by machine, have the highest yield in the country, and have the most abundant antioxidant content. The seed coat of ‘Cheongpung’ was reddish-brown, and had the characteristic of early maturation; it required only 107 days from sowing to harvest. Its culm length was 89 cm, the smallest among domestic cultivated varieties. It could also be harvested by machine without difficulty. Compared with the ‘Hwanggeumchal’ variety, the number of ear per plant in ‘Cheongpung’ was approximately 1.3, but each ear piece weighed 66.2 g, weighing 3.8 g, and the thousand-grain weight was 1.4 grams higher than the rough-grain weight. A local adaptation test in five regions nationwide for two years led to a ‘Cheongpung’ yield of 359 kg/10a, which was the highest among domestic cultivated varieties. In addition, the polyphenol content of ‘Cheongpung’ was 29% higher than that of ‘Hwanggeumchal’. (Registration No. 7717)