• 한국영양학회:학술대회논문집
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• 한국영양학회 1999년도 춘계학술대회 초록
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• pp.60-61
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• 1999

The present study examined optimal level of mulberry leave powder, and the method of bread-making were proposed to utilize mulbery leave powder by investigating rhelogical properties of dough and sensory evaluation of bread. The difference of amino acids compositions in flour brew were also investigated by fermentation of S. cerevisiae or bifidobacteria. As the % of mulberry leave powder increases absorption rate of dough was steadily increased, but stability and R!E ratio if dough were dramatically decreased more than 1% leave respectively. R!E ratio value, which indicates gas retnetion property of dough, was not obtained at the level 5%. Gelatinization temperature and maximum viscosity temperature showed a tentency of decrease, resulting in easier cooking of dough. The delay of temperature cauesd by addition of mulberry leave powder was overcome by two step bread making, that is, modified straight dough method adding flour brew fermented 16hrs by bifidobacteria. The firmness of bread was progressively dreased as the amount of mulbery leave powder increased. The addition of 2% level of mulberry powder to bread showed no significant difference comparing with control in sensery evaluation. Amino acids compositions of Flour brew fermented by bifidobacteria was superior th that by S. cerevisae nutritionally.onally.

• Journal of Animal Science and Technology
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• 제63권4호
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• pp.884-891
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• 2021

The study aimed to evaluate pork loin quality after short-term (ten-day) storage in a supercooling refrigerator. Pork loin samples were stored for 10 days in a traditional refrigerator (control) and a commercially available supercooling refrigerator (SC). Pork quality measurements included meat pH, meat color, water holding capacity (drip loss and cooking loss), tenderness (hardness), and a sensory evaluation. Temperature changes of 0.45 ± 0.2℃ and 0.02 ± 0.25℃ occurred in the control and the SC, respectively, during 10 days of storage. The temperature in the SC chamber did not remain below freezing point, failing to meet expectations. Regarding the pork quality measurements, only the drip losses in the control and the SC were significantly different (4.45% vs. 2.59%, p < 0.01) after 10 days of storage. There were no significant differences between the two types of refrigerator in terms of the other measurements. Additionally, the overall acceptability of the pork loin did not vary significantly between the control and the SC when the sensory evaluation was performed. Therefore, a commercial SC could prove beneficial in terms of water holding capacity during the short-term storage of meat. Further research should be performed to evaluate quality changes that occur during long-term storage of meat in SC s and evaluate a wide range of meat, such as beef and chicken.

• Journal of the Korean Wood Science and Technology
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• 제40권1호
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• pp.44-52
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• 2012

낙엽송 원통형 원주목에 대하여 수증기댐처리와 코팅처리를 실시하여 오-븐건조 하면서 건조속도, 재내의 수증기압 및 재온분포 및 건조할렬 등을 조사한 결과는 다음과 같다. 생재에서 난방된 실내의 이용함수율 수준인 함수율 약 8%까지 건조하는데 72~144시간 소요되었다. 무처리재와 코팅처리재는 전 건조기간에 걸쳐 통공층의 온도가 통피층의 온도보다 항상 높은 분포모형을 보인 반면, 수증기댐처리재의 경우 통피층의 온도가 통공층보다 높거나 같은 분포를 보였다. 수증기댐처리재와 코팅처리재의 경우는 거의 전 건조기간에 걸쳐 통피층의 수증기압이 통공층 보다 큰 분포를 보였다. 총체적으로 할렬발생 정도는 미약하였으며 할렬개수는 코팅처리재, 수증기댐처리재, 무처리재의 순으로 양호한 것으로 나타났다.

• 생물환경조절학회지
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• 제15권4호
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• pp.352-357
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• 2006

참외의 대목종류가 뿌리의 발달과 활력에 미치는 영향을 조사한 결과는 다음과 같다. 자근묘에 비해 접목묘의 뿌리 생장이 우수하였으며 접목묘 중에서는 세력이 강한 품종으로 알려진 '신토좌', '엘리트호박'의 생장이 좋았다. 뿌리의 활력과 관련된 일비액의 분비는 자근묘보다 접목묘에서 우수하였고 뿌리의 발달과 일비속도의 증가는 지온변화와 높은 상관관계를 나타내어 지온이 상승할수록 뿌리 발달이 촉진되고 근 활력이 우수하였다. 과실의 수량은 접목묘에서 무거웠으나 품질은 자근묘에서 높았다.

• Food Science and Biotechnology
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• 제17권2호
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• pp.234-240
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• 2008

The optimal conditions for the production of branched dextrin from com starch (CSBD) using branching enzyme (BE) were established by investigating the degree of retrogradation of the gelatinized starch. The physicochemical properties of CSBD prepared using the established process were evaluated. It was found that physicochemical properties of com starch were greatly modified by BE treatment. CSBD had a higher dextrose-equivalent value and water solubility than the corresponding control. On the other hand, the viscosities in gelatinized solution and amylose contents of CSBD were lower than those of the control. A high-performance size-exclusion chromatography/multiangle laser light scattering/retractive index (HPSEC/MALLS/RI) system showed that the average molecular weight of CSBD was lower than that of the control. The pasting viscosities of CSBD were stable during the entire temperature cycle. In general, the BE treatment resulted in the retrogradation during storage being lower for CSBD than for the control.

• The Plant Pathology Journal
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• 제32권4호
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• pp.290-299
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• 2016

Strawberry bacterial angular leaf spot (ALS) disease, caused by Xanthomonas fragariae has become increasingly problematic in the strawberry agro-industry. ALS causes small angular water-soaked lesions to develop on the abaxial leaf surface. Studies reported optimum temperature conditions for X. fragariae are $20^{\circ}C$ and the pathogen suffers mortality above $32^{\circ}C$. However, at the nursery stage, disease symptoms have been observed under high temperature conditions. In the present study, results showed X. fragariae transmission was via infected maternal plants, precipitation, and sprinkler irrigation systems. Systemic infections were detected using X. fragariae specific primers 245A/B and 295A/B, where 300-bp and 615-bp were respectively amplified. During the nursery stage (from May to August), the pathogen was PCR detected only in maternal plants, but not in soil or irrigation water through the nursery stage. During the cultivation period, from September to March, the pathogen was detected in maternal plants, progeny, and soil, but not in water. Additionally, un-infected plants, when planted with infected plants were positive for X. fragariae via PCR at the late cultivation stage. Chemical control for X. fragariae with oxolinic acid showed 87% control effects against the disease during the nursery period, in contrast to validamycin-A, which exhibited increased efficacy against the disease during the cultivation stage (control effect 95%). To our knowledge, this is the first epidemiological study of X. fragariae in Korean strawberry fields.

• 한국식품과학회지
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• 제28권4호
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• pp.624-631
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• 1996

가정용 냉장고의 제상 횟수와 제상에 따른 온도 상승이 냉동식품의 품질에 미치는 영향을 조사하기 위하여, 육류, 생선, 과일 및 아이스크림을 냉동실에 저장하면서 품질변화를 측정하였다. 냉동실의 제상 주기가 16시간 정도이고, 제상시 온도는 $-5^{\circ}C$로 상승하는 기존의 일반 냉장고와, 제상주기가 30시간 정도이고 제상시 온도는 $-15^{\circ}C$로 조절되어 제조된 냉동실에서의 품질변화를 비교하였다. 냉동저장 중에 일어난 육류와 생선의 단백질 변성 정도와 육즙의 생성율 및 육류의 색깔 변화 정도는, 제상 주기가 짧고 온도 상승폭이 보다 큰 기존의 냉동실에서 변화가 훨씬 심한 것으로 나타났다. 냉동저장 중 얼음의 재결정화로 인한 조직의 파괴 정도와 얼음 결정의 크기를 광학현미경과 전자현미경으로 각각 관찰한 결과, 온도 변동이 심할 경우 육류의 조직이 더욱 많이 파괴되었고, 아이스크림에서는 얼음 결정이 훨씬 커진 것을 알 수 있었다. 시간-온도 지시계에 의한 냉동실의 저장 효과를 비교한 결과 위에 서 측정한 품질변화 속도와 잘 일치하였다. 따라서 냉동실의 제상 주기를 길게 하고 제상시 온도 상승폭을 줄인다면 가정용 냉장고에서 유발되는 냉동식품의 2차적인 품질 저하를 크게 감소시킬 수 있음을 알았다.

• 한국농공학회논문집
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• 제64권6호
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• pp.65-75
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• 2022

Livestock industry in Korea has been growing rapidly and has reached 23 trillion Korean won in 2021. This study focuses on broiler, which is one of the largest sectors in livestock industry. As the effects of climate change get more serious, primary industry such as livestock industry is fragile to climate change since it directly interacts with nature. Therefore, maintaining suitable rearing environment is important. One of the most frequently used ventilation type for controlling the rearing environment of broiler house, tunnel ventilation, causes frequent air velocity fluctuation which makes maintaining the rearing environment important. By measuring the air temperature, relative humidity and air velocity in various points inside the broiler house, the internal thermal environment uniformity was analyzed according to length, width and zone. The experimental house was found to have dead zone with high air temperature, relative humidity and low air velocity near the end of the inlet and at the end of the broiler house. By using heat stress index to analyze quantitatively, zone with highest heat stress index was found to increase by 7.55% compared to the lowest zone. As a result, to maintain uniform rearing environment inside the broiler house, different factors must be measured and analyzed and used to operate the environmental control facilities.

• Current Research on Agriculture and Life Sciences
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• 제32권3호
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• pp.131-134
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• 2014

The thermal death kinetics of the Black timber bark beetle, Xylosandrus germanus, was investigated to develop a heat treatment for control of infested wood packing materials used to export goods. To determine the feasibility of microwave irradiation as an alternative control method, laboratory experiments irradiating wooden blocks of Douglas fir ($200{\times}200{\times}250mm$), which were artificially infested with adults, with 2.45 GHz of microwave energy. All (100%) Ambrosia beetle adults were killed by both hot water treatments and microwave irradiation at $52^{\circ}C$ and $58^{\circ}C$, respectively. Probit analyses estimated the internal wood temperature required to produce Probit (0.99) efficacy to be $64.7^{\circ}C$ (95% CI $62.4-69.9^{\circ}C$) at one minute after microwave treatment.

• 한국환경농학회지
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• 제33권4호
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• pp.364-371
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• 2014

양파의 인경 비대기인 3-5월에 급변 온도조건을 유도시켜 양파의 생육반응과 수량을 조사하였다. 시험품종은 중만생종인 선샤인을 2012년 9월 4일에 파종하여 10월 30일에 정식하였고 다음해 5월 30일에 수확하였다. 온도변화에 따른 처리구는 3-4-5월 평균온도(T0 대조구: $6.0-10.4-17.2^{\circ}C$, T1: $6.0-5.4(-5)-17.2^{\circ}C$, T2: $6.0-10.4-22.2(+5)^{\circ}C$, T3: $6.0-5.4(-5)-22.2(+5)^{\circ}C$)를 기준으로 4월과 5월에 ${\pm}5^{\circ}C$씩 온도차를 두었다. 그 결과, T2처리구가 T0 대조구에 비하여 양파 생육과 구의 수량이 증가하였으나 저온처리구인 T1에서는 감소하였다. 무기이온 함량에서는 3월보다는 5월에 다량원소의 감소가 있었고 고온보다 저온에서 함유량이 높았다. 호르몬의 변화는 구의 비대시기와 밀접하게 관련이 있었으며 ABA 함량의 증가는 구의 비대를 촉진하였다. 따라서 급변온도에 대한 비대기 양파의 생육과 수량은 고온보다는 저온기간이 길어질수록 수량지수가 감소됨을 확인하였다.