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포도 품종별 과립 성숙에 따른 당 조성 및 품질 변화 비교
마쓰모토가즈히로(Kazuhiro Matsumoto),김병기(Byung-Ki Kim),부티킴완(Vu Thi Kim Oahn),서정학(Jeong-Hak Seo),윤홍기(Hong-Ki Yoon),박문균(Mun-Kyun Park),황용수(Yong-Soo Hwang),천종필(Jong-Pil Chun) 한국원예학회 2007 원예과학기술지 Vol.25 No.3
우리나라 주요 재배 포도 6품종을 공시하여 변색기 이후 성숙기간 중 품질, 착색 및 당축적 패턴 등을 비교 분석하였다. 모든 품종에서 과립의 성숙과 더불어 경도가 지속적으로 감소하여 성숙기에 10N 이하로 떨어졌고 가용성 고형물 함량은 과립의 성숙과 더불어 증가하였고 산 함량은 꾸준히 감소하여 성숙기에 0.5% 이하였다. 과피의 안토시아닌 축적은 품종에 따라 절대 수준은 큰 차이가 있었으나 과립의 성숙과 더불어 증가하는 경향이었는데 당산비의 증가와 유의한 상관을 보였다. 과피의 L<SUP>*</SUP> 값은 변색기 이후 급격히 감소하였고 CIRG 값과 당산비간의 상관계수는 ‘캠벨얼리’(r = 0.802, P<0.05), ‘거봉’(r = 0.853, P<0.01) 및 ‘흑구슬’(r = 0.831, P<0.05)로 유의하였다. 과립내에 축적되는 당의 성분을 과즙을 이용하여 HPLC로 분석한 결과, ‘델라웨어’, ‘캠벨얼리’, ‘거봉’, ‘흑구슬’, ‘MBA’는 환원당 축적형으로 그리고 ‘새단’은 자당 축적형으로 나타났는데 환원당 축적형 품종에서는 성숙이 가까워질수록 포도당의 비율이 급격히 증가하여 과당의 격차가 커지고 자당의 비율이 지속적으로 증가되었다. Berry quality, coloration and sugar accumulation pattern were examined in 6 varieties of grape (Vitis labruscana B.) during ripening after verasion. Considerable drops of berry firmness (<10 N) and titratable acidity (<0.5%) were found at ripening stage, while the content of soluble solids was significantly increased along with the ripening process. Total levels of anthocyanin content among the cultivars were different, the concentration of anthocyanin sharply increased coinciding with the sugar accumulation in berries showing high correlation (r=0.956, P<0.01) with maturity index (brix/acid) regardless of cultivars. L value of berry skin decreased after veraison. Correlations between color index for red grape (CIRG) and sugar/acid ratio were found in cultivars including ‘Campbell Early’ (r=0.802, P<0.05), ‘Kyoho’ (r=0.853, P<0.01), and ‘Heukguseul’ (r=0.832, P<0.05). Sugar analysis of extractable juice by HPLC revealed that cultivars such as ‘Delaware’, ‘Campbell Early’, ‘Kyoho’, ‘Heukguseul’, and ‘MBA’ belonged to reducing sugar accumulating group at maturity and ‘Sheridan’ showed sucrose accumulation one. The rapid accumulation of glucose at ripening in former cultivars resulted in the increase of glucose/fructose ratio. These characteristic pattern of sugar accumulation may have a potential for the development as objective ripening index.
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‘신고’ 배 저장 중 바람들이 발생에 따른 세포벽 특성
심훈기(Hoon-Ki Shim),서정학(Jeong-Hak Seo),문승주(Seung-Joo Moon),한창훈(Chang-Hoon Han),마쓰모토가즈히로(Kazuhiro Matsumoto),황용수(Yong-Soo Hwang),천종필(Jong-Pil Chun) 한국원예학회 2007 원예과학기술지 Vol.25 No.3
배 ‘신고’에서 저장 중 생리장해로 큰 피해를 주고 있는 바람들이의 발생에 따른 과실의 품질 및 세포벽성분의 생리 생화학적 특성을 검토하여 과실 생리 및 저장기술의 기초 자료로 제공하고자 본 실험을 실시하였다. 저온저장 기간의 경과와 더불어 바람들이 장해는 증가하는 경향이었고 이러한 경향은 미숙과에 비해 성숙과실에서 뚜렷하였다. 바람들이가 발생한 과실은 과실의 크기에 벼하여 무게가 상대적으로 낮게 측정되었으며 바람들이 장해가 발생한 조직은 경도, 산 함량, 총지질 함량이 정상조직보다 낮았으며 조직의 붕괴도 관찰되었다. 장해가 발생한 과실 조직의 수용성 펙틴, CDTA-가 용성 펙틴 및 Na₂CO₃-가용성 펙틴의 기용성이 정상과실의 조직에 비하여 크게 증가하였고 헤미셀룰로스의 가용성도 장해의 진전과 더불어 증가하였는데 특히 4% KOH 가용성분획의 증가가 유의하였다. 그러나 세포벽 분획 성분별 분자량 변화는 정상과의 조직과 장해과의 장해조직에서만 다소 확인되며 장해 발생정도에 따른 변화는 관찰되지 않았다. We examined physiological and chemical characteristics of pithiness disorder occurred in stored ‘Niitaka’ pears (Pyrus pyrifolia Nakai). Pithiness disorders were increased as low temperature storage time passes and those were prominent in the fruits of full ripe which increased disorder up to 80% for 4 months of storage. Anatomical changes observed by stereomicroscope in damaged tissues showed an extent of cell collapse and cavity formation. The weights of disordered fruits were lower than those of unaffected ones when compared with fruit size. Analysis of pithiness tissues showed almost 40% of firmness drop when we compared to sound tissue. The amount of water-, trans-l,2-cyclohexanediamine-N,N,N',N'-tetra-acetic acid (CDTA)-, and sodium carbonate-soluble pectic polysaccharides and 4% KOH soluble hemicellulosic fraction increased as pithiness disorder extended. But the depolymerizations of high molecular-mass cell wall pectic-and hemicellulosic polysaccharides were not prominent in the disordered tissues while a slight difference was found between unaffected and disordered fruits. Results indicated that the depolymerization of cell wall components were not the major cause of pithiness disorder during low temperature storage in ‘Niitaka’ pears.
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마쓰모토 다케노리(松本武祝),정승진(CHUNG Seung Jin) 대한의사학회 2018 醫史學 Vol.27 No.3
This paper intends to examine the realities of modern hygiene and medical institutions making their appearance in the rural Honam Plain (often called the “rice basket”) of colonial Korea in terms of organizing local units and spreading colonial ‘sanitary discipline’ throughout the region. In the Honam area, modern medical staff and facilities tended to concentrate on the cities in plain region (Kunsan, Jeonju, and Iri), while in the counties in mountainous region they were placed in the township where head office of each county was located. The case of Iksan County in plain region represented this pattern, which was closely associated with the behavior pattern of local Japanese immigrants as well as population growth (i.e., urbanization). The colonial city of Iri in Iksan County with burgeoning population of Japanese immigrants witnessed an early case of hygiene association right after Japan’s annexation of Korea in 1910. The Iri hygiene association was a product of organizational restructuring of the preannexation Japanese resident association into the school association after the annexation, under which it was subordinated. It stands as an interesting contrast to the Jeonju hygiene association organized ‘autonomously’ under the official (police) auspices in the mid-1930s, which did not undergo the stage of school association. Yet, both cases represented the urban ‘autonomous’ (civil) organizations’ effort to transplant colonial ‘sanitary discipline’ into the colonial local societies without recourse to the hygiene police apparatus. On the other hand, the sanitary project in rural areas was carried out on the basis of model hygiene village, with the identical purpose of raising awareness of hygiene and prohibiting epidemics just as the hygiene association in cities. However, considering the low level of epidemic inspection of Korean patients, the effect of the Japanese colonial sanitary project in Korean local societies was disappointing. There was an ever-widening gap in the colonial hygiene and medical services between Koreans and their colonizers as well as between urban and rural areas.
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