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포장재를 달리한 고춧가루의 저장조건에 따른 capsaicinoids와 색상 함량 변화
이선미,박재복,김선아,황인경 한국조리과학회 2003 한국식품조리과학회지 Vol.19 No.4
This study was performed to investigate the change in the chemical components of red pepper powder using different packaging materials and various storage conditions. Red pepper powders with 11 and 15% initial moisture content were packsd with five different materials and stored at different temperatures(0, 20, and 30℃) for a one year period. Over the storage period, each combination was periodically sampled, and examined for composition changes. The five packaging materials were: linear low density polyethylene(LLDPE), nylon/LLDPE(Ny/LLDPE), saran coated ethylene vinyl acetate copolymer/linear low density polyethylene(B650), nylon/Tie/nylon/ethylene-vinyl alcohol copolymer/nylon/Tie/LLDPE(RDX-2787) and oriented polypropylene/aluminum/LLDPE(OPP/Al/LLDPE), and the three storage conditions were (28.3±1.0)℃ with (15.5±2.8)% relative humidity, (18.6±0.5)℃ with(46.6±4.9)% RH, and (0±2)℃ with (80±10)% RH, respectively. The moisture contents of all samples changed according to the relative storage humidity, except those of the samples packed with OPP/Al/LLDPE, which remained constant throughout the storage period. The capsaicinoids content of the red pepper powder did not change significantly for 6 months, but gradually decreased after that until about 85% of the original amount remained at the final stage of storage. The ASTA color values of all samples decreased gradually throughout the storage period. The higher the storage temperature, the more severe the deterioration. The color deterioration seemed greatly related to the existence of oxygen, as the deterioration was especially severe in the samples packed with LLDPE and B650, where the oxygen transmission rate were highest among the five packaging materials.
이선미,문희창,전혜숙,송의근,우동걸,안정화,이무영 한국유전학회 2019 Genes & Genomics Vol.41 No.12
Background Microsatellite markers are an ideal molecular marker for population genetic studies such as population structure, pedigree, and kinship. The yellow-throated marten (Martes flavigula) is widely distributed in coniferous and deciduous forests of eastern Asia and plays the role of an indicator and umbrella species in South Korea, given the absence of top predators such as tiger and leopard. Objective The aim of our study was to establish a core set of microsatellite markers that could be used for a population genetics study on M. flavigula. Methods We characterized 21 di-motif microsatellites for M. flavigula by Illumina next-generation sequencing. We evaluated them for a population genetics study against five established criteria together with 33 previously developed microsatellites. We calculated relatedness values between individual yellow-throated martens in two groups that were suspected to be siblings using the selected core set of markers to confirm applicability. Results Twenty-three loci were determined as the core set of microsatellite markers. The probability of identity P(ID) and probability of identity between siblings P(ID)sib of the core set was estimated as 2− 15 and 2.2−7, respectively. Relatedness values between individuals in the two groups of M. flavigula revealed that one of the pairs was sisters, confirming that the core set can be applied to kinship studies. Conclusion The developed microsatellite core set in this study is expected to contribute to studies on molecular ecology and population structure of M. flavigula.