• Journal of Animal Science and Technology
• /
• 제56권6호
• /
• pp.21.1-21.7
• /
• 2014

This study was performed to investigate the physicochemical and microbiological properties of isoflavone-treated dry cured sausage from sulfur fed pork (0.3%) during storage at $15^{\circ}C$ for 45 days. Groups were divided into three treatments: dry-cured sausages produced with pork fed general diet as the control group (CON), sulfur-fed pork (SUL) and isoflavone-(0.25%) treated sulfur-fed pork (ISO). Moisture content in all groups decreased dramatically from 55-57% to 10-11% during storage, whereas crude protein, crude fat, and ash content increased (P < 0.05). The ISO group showed excellent antioxidant effect compared to CON during storage. Redness and lightness of ISO was higher than that of CON during storage. VBN in the ISO group was significantly lower than that in the CON and SUL treatments during 30 and 45 days of storage (P < 0.05). A total plate count of ISO was significantly lower than that of CON at 45 days (P < 0.05). In this study, adding isoflavone to meat products indicated prevention of lipid oxidation and improved color stability in meat products.

• The Korean Journal of Ceramics
• /
• 제5권2호
• /
• pp.178-182
• /
• 1999

Simple binary $Na_2S-SiO_2$ oxysulfide glasses were prepared by a conventional melt-quench method in order to investigate the role of sulfur in glass structure and the electronic state. By X-ray photoelectron spectroscopy(XPS) measurement, S2p binding energy of the glass was observed at approximately 161eV which was close to that of ionic $S^{2-}$. The coordinating state around silicon atoms were investigated by ${29}^Si$ MAS-NMR measurement. The chemical shift observed from NMR supported that sulfur atom was joined to a silicon atom by substituting for an oxygen atom and was present as a non-bridging sulfide ion in low alkali content. On the other hand, it could be presumed that a portion of sulfur anions existed in an isolated state from the glass-network frame at high alkali content. The state of these sulfurs was also studied by Raman spectroscopy in detail.

• Tribology and Lubricants
• /
• 제16권5호
• /
• pp.332-340
• /
• 2000

The reduction of sulfur content in the diesel fuel has caused the poor lubricity of diesel fuel in the distributor type injection pumps of diesel engines that use the diesel for lubrication of their moving parts. To investigate the reason for poor lubricity of low sulfur diesel fuels, the wear scar diameters by HFRR (High Frequency Reciprocating Rig) were measured on the diesel fuels from Korean markets and the results were compared with their physical and chemical properties. Also, the lubricity change and the improvement effects on lubricity additives for the ultra low sulfur diesel fuel, were made experimentally, that will be regulated to a maximum of 0.005 wt% from about 2005 were evaluated. As a result, a good correlation was found between the wear scar diameter and the polyaromatic compound which includes heterocyclic compound in the diesel fuel. It was also found that the content of polyaromatic compound including heterocyclic compound was affected by the amount of desulfurization treatment fraction. And the lubricity additives with ester base were more effective than that with acid base on the ultra low sulfur diesel fuel. Therefore, it is suggested that the factors affecting the lubricity stated above should be taken into account to improve the lubricity property of the diesel fuel in the refining process.

• 한국식품과학회지
• /
• 제46권2호
• /
• pp.189-197
• /
• 2014

양파 재배 중 유황 엽면시비 횟수를 1회, 4회로 달리하여 생산된 2종의 양파(Sulfur-1, Sulfur-4)를 착즙온도와 시간을 달리하여 $105^{\circ}C$ 5 h, $110^{\circ}C$ 5 h 10 min, $115^{\circ}C$ 5 h 20 min, $120^{\circ}C$ 4 h 30 min, $120^{\circ}C$ 5 h 30 min 조건으로 총 10종의 양파즙을 제조하여, 유황 시비와 열처리 조건이 양파즙의 품질 특성에 미치는 영향을 탐색하였다. 양파즙은 열처리 강도에 비례하여 갈색화 양상을 나타내었으며(p<0.001), 이는 색 특성에 대한 기호도 및 종합적 기호도에 유의적 영향을 준 것으로 평가되었다. 착즙 온도가 높고 시간이 길어질수록 양파즙의 유기산 함량은 유의적으로 증가하여(p<0.001) pH는 감소하였다(p<0.001). 양파 분쇄 단계에서 형성된 thiosulfinate는 $105-120^{\circ}C$ 고온의 열처리 하에서 유의적 차이를 나타내지 않음으로써 thiosulfinate가 저분자 황화합물로 분해되는 속도가 유의적 차이가 없었음을 시사하였다. 총 flavonoids 함량은 열처리 조건이 강할수록 유의적으로 증가하였다(p<0.001). 이는 열처리에 의해 당 등과 결합형태로 존재하는 flavonoids들이 유리형으로 전환되고, 또한 양파 조직의 붕괴가 용이하게 일어남에 따라 matrix로부터 flavonoids의 용출이 증가한 결과로 사료된다. 동일한 조건하에서는 유황처리 횟수가 많은 Sulfur-4 양파즙이 Sulfur-1 양파즙보다 flavonoids 함량이 높은 경향을 보였다. 본 연구는 (i) 양파즙 제조 시 가해진 열처리는, 양파 내부에 존재하는 성분들의 용출과, Maillard 갈변반응, caramelization 등 화학반응 속도에 영향을 주었으며, 이러한 화학적 변화가 양파즙의 색, 점도 등 물리적 특성에 영향을 주었음을 시사해 주었다. 또한 (ii) 양파즙에서 관찰된 이러한 화학적 물리적 변화의 기질을 Sulfur-1 양파보다 Sulfur-4 양파가 상대적으로 더 많이 보유함으로써 재배 중 유황처리 횟수가 양파즙의 품질에 영향을 주었음을 시사하였다.

• 한국환경보건학회지
• /
• 제17권1호
• /
• pp.1-12
• /
• 1991

The atmospheric SO$_{2}$ concentrations and water soluble sulfur contents in Ginkgo biloba were measured and analyzed in auto-measuring station, Kwangleung, and Yongmun from August 5 to October 21, 1990. The results of the study are as follows: 1. Atmospheric SO$_{2}$ concentrations between the seoul area(Pulkwang, Ssangmun, Myonmok, Oilurn) in which the concentrations exceeded the air quality standards and the surburb of seoul (Kwangleung, Yongmun) revealed the significant difference (p<0.01). 2. Water soluble sulfur contents in Ginkgo biloba in autumn were higher than those in Ginkgo biloba in summer (p<0.01). Water soluble sulfur contents in leaves showed a significant difference between seoul and its surburb(p<0.01). 3. Correlation between atmospheric SO$_{2}$ concentration and water soluble sulfur content of Ginkgo biloba in autumn was as follow Y=0.2714+9.8123 X, r=0.6362 (X: Airborne SO${_2}$ Concentration according to sampling location, Y: Water Soluble Sulfur Contents)

• 한국세라믹학회지
• /
• 제11권4호
• /
• pp.31-36
• /
• 1974

For gold balsam, the suitable sulfur balsam which is made of lavender oil and sulfur is found to be the distillate with the content of 15~19% sulfur. The sulfur balsam is distillated under 20mmHg vaccum at 84~105$^{\circ}C$. The composition of the compound which is produced by reaction between sulfur balsam and gold chloride is recognized as C10H18SAuCl3. This varys to C10H18SAuCl in water. The reaction constants K from C10H18SAuCl3 to C10H18SAuCl at 30, 40, 5$0^{\circ}C$ are as followsr. K1=7.97~9.28$\times$10-2 K2=2.81~3.79$\times$10-1 K3=4.74~6.74$\times$10-1 The plots of T versus log K are linear, which shows pseudo-first order reaction. The lower temperature is, the more stable C10H18SAuCl3 is. The gold balsam with excess sulfur balsam is increased in stability.

• Journal of Magnetics
• /
• 제4권1호
• /
• pp.5-9
• /
• 1999

Effect of sulfur segregation on tertiary recrystallization and magnetic induction during final annealing was investigated in a 3% Si-Fe electrical strip containing 6 ppm(LS) and 15 ppm(HS) sulfur. During final annealing, Auger peak height of segregated sulfur on the surface of the strips reached a maximum, and then decreased to low level with increasing annealing time, which is attributed to sulfur segregation and evaporation. The magnetic induction of the thin-gauged 3% Si strip was inversely proportional to the Auger peak height of segregated sulfur on the surface. The overall profile for surface segregation of sulfur and B10 was observed, irrespective of sulfur content in Si-Fe strips, but the peaks of LS strips appeared earlier than those of HS strips. The grain growth rate of the LS strips during final annealing was faster than that of the HS strips, which may be attributed to the pinning effects of segregated sulfur. With increasing final annealing temperature, B10 value increased rapidly and the saturation level in B10 increased.

• Environmental Analysis Health and Toxicology
• /
• 제12권3_4호
• /
• pp.61-66
• /
• 1997

Recently, incidences of pulmonary-related diseases are increasing and natural ecosystem is destroyed year by year owing to air pollutions by industrial noxious gases such as sulfur dioxide and carbon dioxide, etc. Sulfur dioxide produced by oxidation of sulfur compounds is water soluble and causes several kinds of pulmonary diseases, damaging on plants and animals. This study was undertaken to investigate effects of acute exposure of rats to sulfur dioxide using biochemical parameters. The sAST (aspartate transaminase) activity was not significantly affected but sALT (alanine transaminase), sLDH (lactate dehydrogenase) and sALP (alkaline phosphatase) activities were significantly increased by acute sulfur dioxide gas exposure. Also sulfur dioxide gas treatment significantly diminished serum cholinesterase activity. The total lipid, triglyceride, total-, HDL- and LDL-cholesterol contents were significantly increased by sulfur dioxide gas exposures. But the body and liver weight were generally diminished in comparison with control group. Our results' showed increased enzyme activities and lipid contents, but body and liver weight were all diminished by sulfur dioxide gas treatment.

• 한국토양비료학회지
• /
• 제20권2호
• /
• pp.107-113
• /
• 1987

본(本) 시험(試驗)은 수도(水稻)에 대(對)한 수종(數種)의 함유황물질간(含硫黃物質間)의 효과(效果)를 검토(檢討)하기 위(爲)하여 여진(蠣津)벼를 공시품종(供試品種)으로 하여 pot시험(試驗)을 수행(遂行)한 바 그결과(結果)를 요약(要約)하면 다음과 같다. 1. 수도생육기간중(水稻生育期間中) 토양(土壤) pH는 함유황물질시용(含硫黃物質施用)으로 다소(多少) 낮았으며, 함유황물질간(含硫黃物質間)에 있어서 생육초기(生育初期)에는 광물유황구(鑛物硫黃區)가 유안구(硫安區)보다 pH가 높았지만 생육후기(生育後期)로 갈수록 비슷하였다. 시험후(試驗後) 토양(土壤)에서도 함유황물질시용(含硫黃物質施用)으로 토양(土壤) pH는 다소(多少) 낮았다. 그리고 시험후(試驗後) 토양(土壤)의 유황잔존량(硫黃殘存量)은 함유황물질구(含硫黃物質區)에 다소(多少) 높았지만 함유황물질간(含硫黃物質間)에서는 유안구(硫安區)가 가장 낮았다. 2. 수도(水稻)의 초장(草長) 및 분얼수(分蘖數)는 함유황물질시용(含硫黃物質施用)으로 높은 경향(傾向)으로 특(特)히 초장(草長)보다는 분얼수(分蘖數)에서 더 효과적(效果的)이었다. 그리고 수량(收量)에서도 함유황물질구(含硫黃物質區)에서 다소(多少) 높았으며 그중에서도 광물유황구(鑛物硫黃區)에서 가장 높았다. 3. 식물체중(植物體中) 질소(窒素) 및 유황함량(硫黃含量)은 함유황물질시용(含硫黃物質施用)으로 높아졌으며 함유황물질간(含硫黃物質間)에는 생육초기(生育初期)에 유안구(硫安區)가 광물유황구(鑛物硫黃區)보다 높았지만 생육후기(生育後期)에는 낮았다. 4. 출수기(出穗期) 엽신중(葉身中)의 엽록소(葉綠素) 함량(含量)은 석고(石膏) 및 광물유황구(鑛物硫黃區)가 요소구(尿素區)보다 유의성(有意性)이 있게 높았으며, 엽록소함량(葉綠素含量)과 N/S 비율간(比率間)에는 유의성(有意性)은 없었지만 부(負)의 관계(關係)가 있었다.

• The Korean Journal of Ecology
• /
• 제16권1호
• /
• pp.27-37
• /
• 1993

During the autumn of 1991, the water soluble sulfur content in litters of platanus orientalis on the street sides in seoul, pusan, taegu, taejeon, kwangji, ulsan and ch'unch'on cities were determined. The relationship between the water soluble s content in litters of p. orientalis and the traffic was analysed. The average content of water soluble s in litters of p. orientalis in pusan, taegu, taejeon, seoul, ulsan, ch'unch'on and kwangju cities were 0.71%, 0.60%, 0.66%, 0.58%, 0.50%, 0.43%, 0.38%, respectively. The correlation was not statistically significant between the s content in litters of p. orientalis is related to the traffic of each studied area. consequently the water soluble s content in litters of p. orientalis is supposed to be an indirect indicator of air pollution.