• 농촌계획
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• 제7권2호
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• pp.75-85
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• 2001

This study attempted to proposed the strategies for development of peach packinghouses. The overview of the conditions of existing peach packinghouses located Chongdo county was provided. Then, the grading system of packinghouse was newly suggested. In empirical analysis, the optimal size, location, and equipments were taken into account for the case of establishing new packinghouse. The main finding of this study was that the planning and construction of peach packinghouse should be executed in accordance with the regional peculiarities. Specifically, First, the packinghouse could make higher profit by high-quality goods using realistic grading/standardization. It would be preferred by customers that the effective itemization of fruits like peach. Second, it would be necessary that the scale of packinghouse was examinated in the county or town level. Third, in order to make an effective management of the packinghouse, several alternatives for operation were suggested. Also the software of packinghouse should be arranged to satisfy the packinghouse, producers, and customers.

• 한국식품저장유통학회지
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• 제7권1호
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• pp.84-88
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• 2000

The study was conducted to investigate the fermentation characteristics of Daegubo, Harutoh and Yumyung peach cultivars produced mainly in Kyungbuk. soluble solidss, pH, titratable acidtidy, sap rate, alcohol degree, color and sensory quality were analyzed. Sap rates of the three fresh peaches were in the range from 92 to 94%. SS in the juice were 9.6% for Daegubo peach, 9.0% for yumyung and 7.4% for Hakutoh. titrable acidity of DAegubo , harutoh and Yumyung peaches were 0.54, 0.41 and 0.37 % , respectively. In alcohol fermentation , Daegubo and Yumyung peach cultivars showed high sugar decrease and alcohol formation , good color and sensory quality, while Hakutoh showed low sugar decrease and alcohol fermentation.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2002년도 추계학술대회
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• pp.101-109
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• 2002

A lot of SSRs (simple sequence repeats) in peach and pear from enriched genomic libraries and in peach from a cDNA library were developed. These SSRs were applied to other related species, giving phenograms of 52 Prunus and 60 pear accessions. Apple SSRs could also be successfully used in Pyrus spp. Thirteen morphological traits were characterized on the basis of the linkage map obtained from an $F_2$ population of peach. This map was compiled with those morphological markers and 83 DNA markers, including SSR markers used as anchor loci, to compare different peach maps. Molecular markers tightly linked to new root-knot nematode resistance genes were also found. A linkage map including disease-related genes, pear scab resistance and black spot susceptibility, in the Japanese pear Kinchaku were constructed using 118 RAPD markers. Another linkage map, of the European pear Bartlett, was also constructed with 226 markers, including 49 SSRs from pear, apple, peach and chewy. Maps of other Japanese pear cultivars, i.e., Kousui and Housui, were also constructed. These maps were the first results of pear species.

• 식물병연구
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• 제6권1호
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• pp.10-14
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• 2000

1998년 나주와 밀양에서 재배중인 복숭아와 자두에서 세균성 구멍병이 발생하였다. 복숭아와 자두의 병반으루부터 분리한 균주의 세균학적 특성을 조사한 결과, 병원세균 중 2균주는 Xanthomonas campestris pv. pruni로, 3균주는 Erwinia nigrifluens로 동정되었다. E. nigrifluens는 국내에서는 복숭아와 자두의 세균성 구멍병으루 처음 분리되었다. 이 균주는 X. campestris pv. pruni에 의한 병징과 구분하기가 곤란하고, 2종류의 병워세균이 동시에 침입하여 발병하는 것으루 관찰되었다. 이와 같은 이유로, E. nigrifluens와 X. compestris pv. pruni에 의한 복숭아와 자두의 세균병을 각각 \"복숭아, 자두의 세균성구멍병\"로 명명할 것을 제안한다.할 것을 제안한다.

• The Plant Pathology Journal
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• 제35권6호
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• pp.635-643
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• 2019

To detect Xanthomonas arboricola pv. pruni, a loopmediated isothermal amplification (LAMP) detection method were developed. The LAMP assay was designed to test crude plant tissue without pre-extraction, or heating incubation, and without advanced analysis equipment. The LAMP primers were designed by targeting an ABC transporter ATP-binding protein, this primer set was tested using the genomic DNA of Xanthomonas and non-Xanthomonas strains, and a ladder product was generated from the genomic DNA of X. arboricola pv. pruni strain but not from 12 other Xanthomonas species strains and 6 strains of other genera. The LAMP conditions were checked with the healthy leaves of 31 peach varieties, and no reaction was detected using either the peach leaves or the peach DNA as a template. Furthermore, the high diagnostic accuracy of the LAMP method was confirmed with 13 X. arboricola pv. pruni strains isolated from various regions in Korea, with all samples exhibiting a positive reaction in LAMP assays. In particular, the LAMP method successfully detected the pathogen in diseased peach leaves and fruit in the field, and the LAMP conditions were proven to be a reliable diagnostic method for the specific detection and identification of X. arboricola pv. pruni in peach orchards.

• 한국식물병리학회지
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• 제14권1호
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• pp.99-101
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• 1998

A severe brown rot on peach fruit caused by a Phytophthora sp. has occurred at peach orchards in Taegu of Korea from late June to early August in 1997. Infected fruits showed irregularly round or circular water soaking brown regions. In the severe case, fruits were entirely rotten and surface of the fruits were wrinkled. Occasionally, white mycelia and abundant sporangia were developed on the surface of fruit. Inner tissues of the fruits were also discolored to brown. The causal fungus was identified as Phytophthora cactorum based on following characteristics. Sporangia were ovoid, conspicuously papillate, caducous and measured as 28.4~48.1$\times$21.9~37.2 (av. 39.9$\times$30.4) ${\mu}{\textrm}{m}$. Sexuality of the fungus was homothallic. Oogonia were 25.0~34.0 (av. 29.9) ${\mu}{\textrm}{m}$ in size. Most antheridia were paragynous and measured av. 10.5$\times$13.0 ${\mu}{\textrm}{m}$. Optimum temperature for mycelia growth was around 25~3$0^{\circ}C$. However none of the isolates grew under 7$^{\circ}C$ and over 35$^{\circ}C$. The fungus revealed high pathogenicity to fruits, shoots and leaves of peach, apple and pear with different degrees. Phytophthora fruit rot of peach caused by Phytophthora cactorum has not been reported in Korea previously.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2002년도 춘계학술대회
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• pp.101-109
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• 2002

A lot of SSRs (simple sequence repeats) in peach and pear from enriched genomic libraries and in peach from a cDHA library were developed. These SSRs were applied to other related species, giving phenograms of 52 Prunus and 60 pear accessions. Apple SSRs could also be successfully used in Pyrus spp. Thirteen morphological traits were characterized on the basis of the linkage map obtained from an Fa population of peach. This map was compiled with those morphological markers and 83 DHA markers, including SSR markers used as anchor loci, to compare different peach maps. Molecular markers tightly linked to new root-knot nematode resistance genes were also found. A linkage map including disease-related genes, pear scab resistance and black spot susceptibility, in the Japanese pear Kinchaku were constructed using 118 RAPD markers. Another linkage map, of the European pear Bartlett, was also constructed with 226 markers, including 49 SSRs from pear, apple, peach and cherry. Maps of other Japanese pear cultivars, i.e., Kousui and Housui, were also constructed. These maps were the first results of pear species.

• 원예과학기술지
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• 제35권1호
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• pp.59-68
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• 2017

Caffeoyl shikimate esterase (CSE) is a key enzyme in lignin synthesis in Arabidopsis thaliana. To determine the role of CSE in lignification of the endocarp in peach (Prunus persica L.) fruit, we cloned and characterized the P. persica CSE homolog, which we designated PpCSE. The 954 - bp PpCSE gene encoded a 317 - amino acid polypeptide. PpCSE expression patterns in the mesocarp and endocarp changed during peach fruit development. There was no significant difference between the expression levels of PpCSE in the mesocarp and endocarp at 39 and 44 days after full bloom (DAFB), but the expression level of PpCSE in the endocarp at 50 and 55 DAFB was 80.73 and 72.75 times higher, respectively, than that in the mesocarp. During peach fruit development, PpCSE expression in the endocarp increased rapidly; the relative PpCSE expression level at 50 DAFB was 122.70 times higher than that at 39 DAFB. At the protein level, CSE was detected in the peach fruit endocarp at 50 and 55 DAFB. Our study suggests that PpCSE expression during peach fruit development is closely related to the degree of endocarp lignification.

• 한국식품과학회지
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• 제28권2호
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• pp.226-231
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• 1996

복숭아 펄프를 serum-pulp방법에 따라 serum과 불용성 펄프로 분리하고 serum만을 농축하면서 초기에 발생하는 증기를 회수하여 방향성분 획분으로 사용하였다. 농축 복숭아 펄프는 농축 serum, 불용성 펄프와 회수한 방향성분을 흔합제조하여 전체적으로 2배 농축하였다. 농축 복숭아 펄프의 향기성분은 DHC법으로 추출하여 GC와 GC/MS로 분석하고 관능검사한 결과 10%회수된 방향성분 획분을 첨가하는 것이 우수한 향기성분을 유지하는 고품질의 농축 펄프를 생산하는데 적합한 조건으로 나타났다.

• 한국식품영양과학회지
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• 제43권2호
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• pp.265-272
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• 2014

본 연구에서는 복숭아를 이용한 가공 방법의 범위를 확대하고자 복숭아 과즙과 젤라틴을 첨가한 푸딩을 제조하고, 푸딩의 이화학적 특성과 관능적 품질특성을 분석하고자 하였다. 이화학적 특성으로 수분함량, pH, 당도, 색도 및 조직감을 분석하였고, 관능적 품질특성은 색, 맛, 풍미, 조직감, 전체적인 선호도를 실시하였다. 먼저 복숭아 과즙 첨가량이 증가할수록 수분함량과 pH는 감소하였으나, 당분의 함량은 증가하는 경향을 나타내었다. 젤라틴 첨가량이 증가할수록 수분함량은 감소하였으나, pH는 일정하게 유지하였고 당도는 매우 약하게 증가하는 경향을 나타내었다. 또한 색도의 경우 복숭아 과즙 첨가량에 따라 L값과 b값은 감소하는 경향을 나타낸 반면 a값과 ${\Delta}E$값은 유의적으로 증가하였고, 젤라틴 첨가량에 따라 L값은 증가한 반면 b값은 약간 감소하였으나 a값과 ${\Delta}E$값은 일정한 범위를 유지하였다. 조직감 비교에서는 복숭아 과즙 첨가량에 따라 경도와 탄성은 감소하였으나 점착성, 씹힘성 및 응집성은 증가하였다. 그리고 젤라틴 첨가량에 따라 경도, 점착성, 씹힙성, 응집성 및 탄성은 모두 유의적으로 증가하는 경향을 나타내었다. 또한 복숭아 과즙첨가량과 젤라틴 첨가량에 따라 제조된 푸딩의 색, 풍미, 맛, 조직감, 전체적인 선호도에서 60%의 복숭아 과즙 첨가와 1.5%의 젤라틴 첨가한 푸딩이 가장 높은 선호도를 나타내었다. 따라서 본 연구에서는 복숭아 과즙과 젤라틴 첨가가 푸딩의 품질과 관능적 특성을 향상시킴을 확인하였으며, 푸딩 특성을 이용한 복숭아의 고부가가치의 가공 제품 개발의 가능성을 제시하였다.