생균제의 산업적 활용과 앞으로의 전망

조진국,Jo, Jin-Guk 한국단미사료협회 2008 피드저널 Vol.6 No.3

김치로부터 분리한 Lactobacillus plantarum JK-01의 동정 및 생리적 특성

조진국,이관호,조성진,윤여창,황성구,허강칠,최일신,Cho, Jin-Koo,Li, Guan-Hao,Cho, Sung-Jin,Yoon, Yoh-Chang,Hwang, Seong-Gu,Heo, Kang-Chil,Choe, Il-Shin 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.3

김치의 L. plantarum의 생균제적 특성을 조사하기 위하여 김치에서 산생산과 성장능력 등이 우수한 25종의 Lactobacillus sp.를 분리하였고, API kit 분석에 의하여 L. plantarum을 동정하고 재차 16S rDNA 염기서열(99.9% 상동성)을 비교한 후 L. plantarum JK-01로 표기하였다. L. plantarum JK-01은 MRS broth에서 배양시 18시간 후 $2.9{\times}10^{10}CFU/ml$로 최대로 증식하는 빠른 성장특성을 나타냈으며 pH도 4.5로 조속히 하강하였다. 효소활성은 xylanase, amylase, protease, phytase의 순으로 높은 활성을 포함하고 있는 것으로 예측되었다. L. plantarum JK-01은 pH 2에서도 $1.36{\times}10^5CFU/mL$가 생존하였고, 1%의 담즙산에서도 약 $10^6CFU/mL$이상이 생존하여 내산성과 내담즙산성이 강한 것으로 나타났다. 또, $60^{\circ}C$에서도 $3.3{\times}10^3$ CFU/mL 정도로 생존하는 내열성이 있었으며, 대장균과 함께 배양시 18시간 후 대장균을 사멸시키는 것으로 나타났다. 이상의 결과로부터 분리한 L. plantarum JK-01은 생균제로서 충분히 이용가치가 있는 것으로 사료되었다. In order to identify probiotic microorganisms, 25 isolates of Lactobacillus sp. were selected from kimchi based on their growth rates, lactic acid production and salt tolerance. The isolate JK-01 was identified as Lactobacillus plantarum by the API kit and 16S rDNA analysis (99.9% of homology), and named as L. plantarum JK-01. The maximum number of L. plantarum JK-01 was reached at 18 hr fermentation in MRS broth and the pH gradually decreased to 4.5. L. plantarum JK-01 showed high enzyme activities for xylanase, amylase, protease, and phytase on MRS agar plates containing each substrate. L. plantarum JK-01 showed high resistance to acidic pH and bile salts, and grew well even at pH 2.0 and 1.0% bile salt. In particular, L. plantarum JK-01 showed high heat stability as shown by $3.3{\times}10^3$ CFU/mL at $60^{\circ}C$. The isolate showed remarkable antimicrobial activity against E. coli in MRS broth based on its disappearance after 18 hr and clear zone formation using a paper disk assay. These results suggest that L. plantarum JK-01 may be probiotic in nature.

사료 내 β-Glucanase 활성이 강화된 복합효소제 급여가 육계의 생산성과 혈청성분 및 육질에 미치는 영향

조진국,정수진,주은정,최진영,김병석,윤병선,남기택,황성구,Cho, Jin-Kook,Jung, Soo-Jin,Joo, Eun-Jeong,Choi, Jin-Young,Kim, Byoung-Suk,Youn, Byeng-Sun,Nam, Ki-Taek,Hwang, Seong-Gu 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.4

본 연구에서는 Ross 208 종의 broiler 31,800수를 대조구와 복합 효소제 첨가구로 나누어 5주간에 걸쳐 대조구는 옥수수-대두박을 기초로 한 시판 육계사료를 급여하고, 시험구는 ${\beta}-glucanase$를 강화한 복합 효소제를 0.3% 첨가 급여하여 생산성과 혈청성분과 육질에 미치는 영향을 조사하였다. 시험기간 동안의 각 시험구의 증체량 및 사료 효율, 생산지수, 육성율을 측정하였고 무작위로 각 시험구당 20수를 선발하여 혈청 콜레스테롤 및 glucose 농도를 측정하였다. 또 ND와 IBD 항원을 음용 투여한 브로일러의 ND와 IBD에 대한 항체역가를 조사하였으며, 육질검사로 도체의 pH 및 육색, 가열감량, 보수력, 전단력을 측정하였다. 사육시험 결과, 0.3% 복합 효소제 시험구가 대조구에 비해 평균체중 19%, 생산지수 6.8%, 사료효율 5.5%, 육성율 5%의 증가를 나타내었다. 복합 효소제 시험구는 대조구보다 혈청내 HDL-콜레스테롤 양을 증가시키고 glucose의 양을 감소시켰다. 육계 혈청 내 ND 및 IBD 항원에 대한 항체역가도 복합 효소제 시험구가 대조구보다 높았다. 육질검사에 있어서는 복합 효소제 시험구가 대조구보다 육색과 전단력은 차이가 없었으나 보수력(p<0.05)과 가열감량이 개선되는 결과를 나타내었다. 이상의 결과로부터 ${\beta}-glucanase$ 활성을 강화한 복합 효소제의 첨가 급여는, 육계의 생산성과 혈청성분과 면역기능과 육질을 개선시키는 효과가 있는 것으로 사료된다. This experiment was conducted to investigate the effects of dietary enzyme mixture fortified with ${\beta}-glucanase$ on the growth performance, serum components and meat quality of broiler chicks. 31,800 Ross 208 male broiler chicks were randomly allotted into 2 groups, the control and 0.3% enzyme diet with ${\beta}-glucanase$ supplementation groups. Control group chicks were fed the control (corn-soybean meal based) diet and the treatment group chicks were fed the 0.3% enzyme mixture supplemented with ${\beta}-glucanase$. The growth performance, serum components and meat qualities such as pH, color, water holding capacity, cooking loss, and shearing force of meats were investigated. The results showed that the growth performance of chicks fed the 0.3% enzyme mixture diet were improved compared to that of the control group, as much as 5% in growth rate, 19% in average weight, 6.8% in performance index, and 5.5% in feed efficiency. Although, there were no significant differences in the muscle color degrees ($L^*a^*b^*$) and shearing force between the control group and experimental group, the water holding capacity and cooking loss of the experimental group were significantly higher than those of control group (p<0.05). The antibody titers in serum against the antigens of Newcastle disease and Infectious Bursal disease were higher in the experimental group than in the control group. Altogether, these suggest that the broiler diet containing 0.3% enzyme mixture fortified with ${\beta}-glucanase$ activity can improve the growth performance, immune reaction, and meat quality of broiler chicks.

동시에 시행된 질식자궁적출이 Tension-free Vaginal Tape 수술결과에 미치는 영향

조진국,송하정,최경우,조성태,김기경 대한비뇨의학회 2008 Investigative and Clinical Urology Vol.49 No.9

Purpose: Hysterectomy, regardless of the surgical technique, increases the risk of having to undergo stress urinary incontinence surgery later in life. Furthermore, transvaginal hysterectomy may cause some changes in the normal architecture and tension of the tissues surrounding the pelvic floor, and this may also cause some changes in the continence mechanisms of the bladder and urethra. We investigated if there are any adverse effects of concomitant vaginal hysterectomy on the outcomes of a tension-free vaginal tape procedure. Materials and Methods: The outcomes of the tension-free vaginal tape (TVT)/transvaginal total hysterectomy(VTH) group were compared with that of the TVT group in terms of cure and improvement of incontinence, satisfaction with the procedure and the complications. The preoperative evaluation included history taking, physical examination and stress tests and determining the stress-related leakage, the emptying ability, the anatomy, the protection and the inhibition(SEAPI) scores. The outcomes were evaluated at over one year after operation. Results: The cure and improvement rates were 77.5% and 15% in the TVT group, and 88.9% and 7.4% in the TVT/VTH group, respectively, without any statistical difference between the two groups. The rates of patient- satisfaction with the procedure were similar in two groups. There were no serious or long term complications related to the procedure except for a case of local hematoma in the hysterectomy site, which was controlled conservatively. Conclusions: Our findings suggest that a TVT operation can be done simultaneously with vaginal hysterectomy with similar results as those of TVT operation only. In addition, it is thought that the simultaneous TVT operation in a patient who is undergoing hysterectomy and has urinary stress incontinence deserves to be recommended in a positive light. Purpose: Hysterectomy, regardless of the surgical technique, increases the risk of having to undergo stress urinary incontinence surgery later in life. Furthermore, transvaginal hysterectomy may cause some changes in the normal architecture and tension of the tissues surrounding the pelvic floor, and this may also cause some changes in the continence mechanisms of the bladder and urethra. We investigated if there are any adverse effects of concomitant vaginal hysterectomy on the outcomes of a tension-free vaginal tape procedure. Materials and Methods: The outcomes of the tension-free vaginal tape (TVT)/transvaginal total hysterectomy(VTH) group were compared with that of the TVT group in terms of cure and improvement of incontinence, satisfaction with the procedure and the complications. The preoperative evaluation included history taking, physical examination and stress tests and determining the stress-related leakage, the emptying ability, the anatomy, the protection and the inhibition(SEAPI) scores. The outcomes were evaluated at over one year after operation. Results: The cure and improvement rates were 77.5% and 15% in the TVT group, and 88.9% and 7.4% in the TVT/VTH group, respectively, without any statistical difference between the two groups. The rates of patient- satisfaction with the procedure were similar in two groups. There were no serious or long term complications related to the procedure except for a case of local hematoma in the hysterectomy site, which was controlled conservatively. Conclusions: Our findings suggest that a TVT operation can be done simultaneously with vaginal hysterectomy with similar results as those of TVT operation only. In addition, it is thought that the simultaneous TVT operation in a patient who is undergoing hysterectomy and has urinary stress incontinence deserves to be recommended in a positive light.

사료 내 β-Glucanase 활성이 강화된 복합효소제 급여가 육계의 생산성과혈청성분 및 육질에 미치는 영향

조진국,정수진,주은정,최진영,김병석,윤병선,남기택,황성구 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.4

This experiment was conducted to investigate the effects of dietary enzyme mixture fortified with β-glucanase on thegrowth performance, serum components and meat quality of broiler chicks. 31,800 Ross 208 male broiler chicks were ran-domly allotted into 2 groups, the control and 0.3% enzyme diet with β-glucanase supplementation groups. Control groupchicks were fed the control (corn-soybean meal based) diet and the treatment group chicks were fed the 0.3% enzyme mix-ture supplemented with β-glucanase. The growth performance, serum components and meat qualities such as pH, color,water holding capacity, cooking loss, and ed. The results showed that the growthperformance of chicks fed the 0.3% enzyme mixture diet were improved compared to that of the control group, as much as5% in growth rate, 19% in average weight, 6.8% in performance index, and 5.5% in feed efficiency. Although, there wereno significant differences in the muscle color degrees (L*a*b*) and shearing force between the control group and experi-mental group, the water holding capacity and cooking los of the experimental group were significantly higher than thoseof control group (p<0.05). The antibody titers in serum against the antigens of Newcastle disease and Infectious Bursal dis-ease were higher in the experimental group than in the control group. Altogether, these suggest that the broiler diet contain-β-glucanase activity can improve the growth performance, immune reaction, andmeat quality of broiler chicks.

인유의 막성분중에서 검출되는 새로운 Ca2+ - ATPase

조진국,관야장우공문 한국유가공기술과학회 1997 한국유가공기술과학회지 Vol.15 No.2

Calcium-stimulated ATPase (Ca^(2+)-ATPase) which has optimal pH value at 7.0 was found in the membrane fraction of human milk, and its enzymatic properties were studied. The purified Ca^(2+)-ATPase required 0.45 mM Ca ion for maximal activity. Among the nucleosides, Ca^(2+)-ATPase showed a higher substrate specificity to ATP and UTP than to CTP and GTP. Ca^(2+)-ATPase had apparent Km value of 0.065, and Vmax of 7.63 mol ATP hydrolyzed/㎎ protein per min, respectively. Ca^(2+)-ATPase was potently inhibited by lanthanide, vanadate, and p-chloromercuribenzoate, and inactivated by EDTA, and CDTA and EGTA, but were unaffected by N-ethylm-aleimide, NaN₃, ouabain, or oligomycin, and was completely inactivated by heating at 60℃ for 10 min. This enzyme activity was concentrated in the membrane fraction of the cream and skim milk membrane, but not founded in bovine milk.

천연의 점토광물질 발효산물 급여에 의한 친환경 고품질 원료돈육 생산

조진국,양승학,황성구,Cho, Jin Kook,Yang, Seung Hak,Hwang, Seong Gu 한국축산환경학회 2012 축산시설환경학회지 Vol.18 No.suppl.

축산물 생산은 집약적 사육환경으로 인한 각종 병원균이 내재한 가운데 이루어지고 있어 항생제 및 각종 사료첨가제등의 사용이 날로 증가해왔다. 한편, 축산물의 안전성에 대한 인식이 높아짐에 따라 농축산물 생산에 있어서 안전성 확보에 대한 연구가 절실히 요구되고 있다. 따라서 본 연구에서 특수발효 미생물을 이용하여 복합미량원소(Se, Ge, Zn, S)를 강화시킨 점토광물질 발효 산물이 돈육의 생산성 및 품질에 미치는 영향을 조사하였다. 공시동물은 Large White와 Yorkshire 교잡종 80두를 대조구와 실험구로 임의 배치해 실험하였다. 실험 결과, 점토광물질 발효산물을 사료 내 0.3% 첨가 급여했을 때 사료섭취량 및 증체량, 사료효율, 도체의 pH, 육색의 명도와 대퇴부의 밝기 등은 일반사료를 급여한 군과 비슷하였으나, 지육율은 2.7%, 도체육의 적색도는 12%, 보수력은 10% 개선되고 가열감량은 6% 감소하였다. 또한 면역기능조절효과를 조사하기 위해 비육돈의 혈액을 채취하여 혈액 내 말초혈액단핵세포의 증식 및 cytokine 분비 능을 조사한 결과, PBMC는 증식정도가 유의하게 증가하였고, LPS와 Con A를 처리하였을 때 대조구에 비해 더욱 뚜렷이 증가하는 것으로 나타났다. cytokine의 분비량도 TNF-${\alpha}$의 경우 약간 증가하는 경향을 보였다. 따라서 양이온 치환능력이 높고 원적외선 수치가 높은 점토광물 발효산물을 급여함으로써 면역능력이 강화되어 항생제를 사용하지 않고도 안전성 높은 고품질 친환경 돈육을 생산할 수 있는 가능성이 시사되었다. We investigated the effect of the clay mineral fortified with complex trace elements by specific fermentation microbes on growth performance and a quality of pork in this study. For the declared experimental animal, 80 heads of crossbred with Large White and Yorkshire were randomly splitted into a control group and a test group. Each group were assigned with 4 replicates and 10 heads of each replicate. When 0.3% of the fermentation product of the clay mineral (FCM) was added into feed stuff and fed for 9 weeks of experimental feeding period, the results of the feed intake, weight gains, pH of carcass, lightness of meat color, and brightness of the muscle semimembranosus were similar to those of the control group. However, dressing percentage, reddishness of carcass, and water holding capacity were improved, respectively, as much as 2.7%, 12%, and 10%, and reduced by 6% in cooking loss. In order to investigate the immune modulatory effect of fermented clay mineral, pheripheral blood mononuclear cells (PBMC) were isolated and Immune modulatory parameters were measured. The proliferation activity of PBMC from pigs fed the fermented clay mineral were significantly increased compared to control group pigs, and also those results were more clearly observed as activated with lipopolysaccharide and concanavaline A. The secretion of TNF-${\alpha}$ of the FCM group pigs showed an increasing tendency. Therefore it was suggested that the feeding of FCM which was high in cation metathesis and the value of infrared ray, activated the immune responses, and thus the production of the environment-friendly high quality pork without the use of antibiotics would be possible.

각 미생물의 β-galactosidase와 Phytase의 활성비교

조진국,장우진,최진영,허강칠,이종익 한국축산식품학회 2005 심포지움 및 학술발표회 Vol.- No.35

본 연구는 β-galcactosidase와 phytase활성이 높은 균주의 선발을 목적으로 수각 미생물들을 Kefir와 자연환경에서 분리하여 효소활성을 측정하였다. 배양한 유산균과 효모 균체액을 French pressure cell press로 세포를 파쇄하였을 때, 각 미생물의 단백질농도는 효모보다 유산균이 높은 것으로 나타났다. β-galcactosidase의 비활성은 Kluyveromyces maxiranus와 Candida utilis를 제외하고는 대부분 0.80~0.89umol/min/mg 사이였다. 체적활성의 경우는 Lactobacillus paracasei 및 Lactobacillus rahmnosus, Enterococcus faecium이 각각 15.9 및 14.5, 14.5 umol/ml를 기록하여 β-galcactosidase의 추출재료로 우수하였다. phytase의 비활성은 Lactobacillus paracasei 와 Enterococcus faecium이 0.032와 0.038 umol/min/mg로 가장 높았다. 체적활성의 경우는 Lactobacillus paracasei가 35.12 umol/ml로 가장 높았다. 결론적으로 β-galcactosidase와 phytase의 생산측면에서 이용한 미생물중에서는 Lactobacillus paracasei가 가장 우수한 것으로 사료되었다.

칡 추출물이 흰쥐의 체내 항산화계에 미치는 영향

조진국,박재형,이윤호,이치호 한국축산식품학회 1999 한국축산식품학회지 Vol.19 No.1

인유 및 우유의 획분에 존재하는 표지효소들의 효소활성과 분포

조진국,김천제,김창한,Y . Takeda 한국축산식품학회 1998 한국축산식품학회지 Vol.18 No.2