Wood vinegar, an extract from Acer Tegmentosum Maximowicz, was evaluated for its hypoglycemic and anti-diabetic properties by using normal and diabetic rats. The extract was dissolved in water and administered daily for six or seven weeks. In experiment 1, thirty normal Sprague- Dawley (SD) male rats were randomly divided into five treatments of 6 rats each. The treatments were T1 (mineral water), T2 (mineral water), T3 (silver solution), T4 (wood vinegar), and T5 (silver solution + wood vinegar) and diabetes was induced by intravenous injection of streptozotocin except T1. In experiment 2, sixteen diabetic Goto-Kakizaki (GK) male rats were randomly divided into four treatments of 4 rats each. The treatments were T1 (mineral water), T2 (silver solution), T3 (wood vinegar), and T4 (silver solution + wood vinegar). Streptozotocin-induced diabetic rats showed less body weight gain, more food intake and less water consumption as compared with normal non-diabetic rats. Oral administration of wood vinegar resulted in more weight gain, lower blood glucose concentration and urine pH among all the diabetic rats. In experiment 2, diabetic GK rats administrated with wood vinegar showed higher weight gain, food intake and less water intake when compared with control. However, supplementation with wood vinegar did not result in any decrease of blood glucose concentrations. It could be concluded that wood vinegar extracted from Acer Tegmentosum Maximowicz exerted hypoglycemic effect in diabetic-induced normal rats, but not in diabetic GK rats.

Two experiments were conducted to determine the effect of wood vinegar (WV) on the fecal microbes and gas emission in weaned pigs. In Exp. 1, 224 weaned piglets (L×Y×D, 21 d-old, initial BW 6.02 ± 0.52 kg) were assigned to four treatments of different WV levels in randomized completely block design with four replicates (14 piglets/pen) for 28 days, including phases I (0-2 wk) and phase II (3-4 wk). The dietary treatments were 0, 0.1, 0.2 and 0.3% of WV added to a corn-soybean meal basal diet. The concentration of ammonia measured at 0 h and 24 h in feces did not differ among dietary treatments (p>0.05), but it was linearly decreased (p<0.05) in 0.2% and 0.3% addition level measured at 48 h and 72 h. The concentration of hydrogen sulfide had no significant change (p>0.05) within treatments measured at different time. The fecal total bacteria (TBC), Lactobacilli(LAB) and E. coli were measured on 14 d and 28 d. TBC were higher (p>0.05) in WV added treatments than the control. Similar results were obtained for LAB. But E. coli populations were decreased (p<0.05) in treatments added WV compared to control measured on 14 d and 35 d. In Exp. 2, 288 weaned piglets (L×Y×D, 21 d-old, initial BW 6.62 ± 0.31 kg) were assigned to four treatments in a randomized completely block design with four replicates (18 piglets/pen) for 28 days. The dietary treatments were basal diet (negative control, NC), 0.2% organic acid (positive control, PC), 0.2% antibiotic (AT) and 0.2% WV added to a corn-soybean meal basal diet. The fecal total bacteria (TBC), Lactobacilli(LAB) and E. coli were measured on 14 d and 28 d. TBC, LAB and E. coli showed lower counts in pigs fed AT diets than others. In conclusion, these results indicated that wood vinegar could reduce the NH3 concentration of feces and inhibited the growth of harmful bacteria.

유기농자재인 목초액과 키토산의 농업적 이용을 위하여 고추의 생육과 양분흡수 및 토양미생물상에 미치는 영향을 살펴본 결과는 다음과 같다. 키토산 처리구에서 토양의 방선균수가 증가하고 사상균 수는 감소하는 경향으로 A/F 및 B/F비가 커졌으며, 정식 후 50일에 경경이 약간 큰 편이었으나, 엽록소함량은 처리별 큰 차이를 보이지 않았다. 병해충은 관행에 비해 키토산 및 목초액 처리구 모두 발생률이 많아 병해충의 방제효과는 볼 수 없었다. 식물체 분석 결과 키토산과 목초액 처리구 모두 Ca, K가 관행보다 다소 높았으며 키토산 처리구는 과실의 무기성분 중 Ca와 K와 같은 양이온 함량이 다소 많은 편이었다 키토산과 목초액 처리에 의한 수량은 병해충 발생으로 관행에 비하여 모든 시험구에서 감소하여 수량증대효과는 기대할 수 없었으나. 과중 등의 과실특성이 좋게 나타나 키토산 10회 처리의 경우 관행대비 92.4%로 관행에 가까운 수량지수를 보였다.

This study aimed to isolate and identify the new strains which can be utilized in fermentation process for the production of functional materials. Isolation of the new microorganism in wood vinegar, natural liquid material generated from the carbonization of various trees was studied. Marine agar medium was used for the isolation of halo-tolerant bacteria. Using a sterilized toothpick, transfer same shape colonies to agar plates and continuous cultivation of colonies at 37℃ for several days, 2 colonies were isolated. Through the 16S-based ID service, isolated strains were identified as Cytobacillus species. Verifying the industrial values of the two isolated strains, the productivities of various enzymes such as amylase, lipase, and protease were confirmed. As a result, isolated 2 strains showed amylase and protease activities which means the possibility of applying to biological processes in the food and cosmetic industries.

Tomatoes are considered as one of the main components of daily meals in most households. Thus, it is important to invest in studies enhancing their yield and nutritional value. The study evaluated the effect of wood vinegar (WV) on tomato under greenhouse conditions. Data on fruit number, fruit weight, and plant height were recorded. Total phenolic content (TPC) and antioxidant activity of tomato were determined using the Folin-Ciocalteu reagent and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, respectively. FRR-CF+500x-WV significantly increased the fruit number (86.11%) and fruit weight (81.78%) over the control. Results were comparable to HRR-CF+250x-WV, indicating that conventional fertilizer and WV may have synergistic effect on each other. TPC and scavenging effect on DPPH radical was improved by 250x-WV application. The increase in the phenolic compounds can be attributed to WV as a direct source or as a factor triggering the plants to produce more secondary metabolites with the purpose of increasing natural defenses. The significant effect obtained by applying the full recommended rate of conventional fertilizer on the carotenoid content was due to the availability of the major nutrients needed by the plant. Correlation analysis showed that carotenoids have negative correlation with TPC and DPPH. However, TPC and DPPH showed that these are positively correlated with each other. Tomatoes are excellent source of antioxidants associated with the reduction of some human diseases and improved health. The results provided evidence that WV alone and/or its combination with conventional fertilizers has favorable effects on the quality of tomato.

Environment-friendly growth enhancers for rice are being promoted to reverse the negative impact of intensive chemical-based and conventional rice farming on yield sustainability and environmental problems. Several rhizosphere microorganisms and pyroligneous acids (PA) had demonstrated beneficial influence on growth, yield and grain quality of rice. Since most of the previous study had evaluated the effect of PGPR and PA on paddy rice singly, the effect of combined application of these on the growth and yield of paddy rice and on some soil chemical properties were determined. A four factorial pot experiment was conducted to evaluate the effect of PGPR, PA in combination with fertilizers and on different soil types. There were 54 treatment combinations including the control with three replications under complete randomized design. Plant growth parameters were evaluated using standard procedures during tillering and heading stages. Rice yield and some soil chemical properties were determined at harvest. Results showed that inoculation of Bacillus licheniformis and Fusarium fujikuroi enhanced plant growth by increasing the plant height which could be ascribe to its ability to promote IAA and GA production in plants. Inoculation of Rhizobium phaseoli enhanced chlorophyll content indicative to its ability to improve the N nutrition. However, these plant growth benefits during the vegetative stage were override by the fertilizer application effect especially during the maturity stage and grain yield. High fertilization rates on coarse-textured soil without nutrient loss resulted to high available nutrients and consequently high yield. Wood vinegar application however improved nutrient availability in soil which could be beneficial for improving soil quality. Further evaluation is necessary to fully assess the potential benefits that could be derived from inoculation of these organisms and wood vinegar application in different soil environment especially under different field conditions.

본 연구는 목초액의 섭취가 훈련된 흰쥐의 항산화방어기전에 미치는 영향을 알아보기 위하여 수행되었다. 실험대상으로는 Sprague-Dawley계 수컷 흰쥐를 사용하였는데 실험그룹은 비운동 대조군과 운동 대조군, 목초액 섭취 비 운동 대조군, 목초액 섭취 운동 대조군으로 나누어 수행하였는데 체중과 혈중성분 변화, 글리코겐 함량, SOD 활성 수준, MDA 함량에 관한 분석을 하였다. 체중과 체지방(장간막, 복막후, 부고환)은 각 그룹 간에 유의한 차이가 없었고, TG와 FFA 농도도 목초액 섭취로 인한 차이는 없었다. Glucose 농도는 대조군 보다 운동군에서 유의한 차이를 나타내었으나 목초액 섭취로 인한 차이는 없었다. 목초액 투여 운동군에서의 SOD 활성은 다른 그룹보다 유의하게 높았다. 운동 대조군에서의 MDA 함량은 비운동 대조군보다 유의하게 낮게 나타났으나 대조군과 목초액 투여군 간의 차이는 없었다. 결론적으로 운동과 목초액 섭취는 산화적 스트레스의 감소에 긍정적인 영향을 줄 것으로 예상된다.

The effect of mixed treatments of wood vinegar and sulfonylurea-based herbicides on weed control, yield and yield components, and quality of rice was investigated. Two herbicides were tested namely: imazosulfuron-ethyl+thiobencarb[ethyl-1-(2-chloroimidazo[1,2-α ]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl) urea+S-4-chlorobenzyl diethyl(thiocarbamate)], and bensulfuronmethyl+butachlor [methyl α -[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-o-toluate+N-butoxymethyl-2-chloro-2',6'-diethylacetanilide]. The experiment was carried out in a randomized complete block design with 3 replications and 5 treatments. Treatments used were recommended(RH: 100%) and half-recommended(HRH: 50%) application rates of each herbicide. Half-recommended application rates were combined with 1 mL wood vinegar 500mL~;water-1 (500) and 1 mL wood vinegar 1000mL~;water-1 (1000) wood vinegar. Plots for no herbicide treatments were also prepared and used as control. Results showed that wood vinegar significantly increased efficacy of HRH in bensulfuron-methyl+butachlor while high efficacy was already obtained in HRH treatment of imazosulfuron-ethyl+thiobencarb. Wood vinegar did not improve the efficacy of imazosulfuron-ethyl+thiobencarb but improved rice yield. Significantly similar rice yields were obtained in the HRH+1000 WV and RH treatments of both herbicides. There were no significant variations in the yield components among the treatments; however, differences in yield can be attributed to the variations in the spikelet number and ripening ratio. Data on rice quality analysis did not show clear trend on the effects of the treatments on grain appearance and nutritional quality.

포도 생육 중 유기농자재의 엽면살포가 포도의 품질과 저장성에 미치는 영향을 농약 처리와 비교하였다 포도의 과방중과 열과 발생률은 처리간에 유의적인 차이를 보이지 않았으나 키토산, 목초액, 곡물아미노산 처리에 의하여 과방중 300g이상과의 비율이 농약처리나 무처리에 비하여 높았다. 유기농자재를 처리한 포도의 당도와 환원당은 각각 , 13.0-14.5%로 농약처리 , 13.1%에 비하여 높았으나 유의적인 차이는 보이지 않았으며 총산함량은 키토산(0.

목초액의 아질산염 소거, 전자공여작용 및 대두유에 농도별(0.5, 1 및 5%)로 첨가하여 항산화성을 조사하였다. 아질산염 소거 효과는 모든 농도에서 pH가 증가하면서 감소하는 경향을 보였고, pH 1.2의 경우 100 /mL의 농도에서 80%이상의 높은 활성을 보였다. 전자공여작용은 50 /mL의 농도에서 약 80%의 효과를 나타내었다. 목초액을 첨가하지 않은 대두유를 control로 사용하였고, 0.1% BHT를 첨가한 대두유는 비교군으로 사