• Title/Summary/Keyword: sun-drying

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The Changes in the Chemical Composition of Lipid in Hair-tail Muscle on Sun-Drying (갈치육(肉)의 일광건조중(日光乾燥中) 지질(脂質)의 화학적(化學的) 변화(變化)에 관(關)한 연구(硏究))

  • Namkung, Sok;Lee, Young-Ja;Ahn, Myoung-Soo
    • Journal of Nutrition and Health
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    • v.13 no.1
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    • pp.65-69
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    • 1980
  • When the Hair-tail was dried in the direct sunlight, the changes of acid value, TBA value, peroxide value and fatty acid composition of its muscle were observed. The results of the observation were as follows: 1) Total content of the lipid in the fresh Hair-tai1 was 9.91%, that of saturated fatty acid was 43.3%, and that of unsaturated fatty acid was 56.7%. The TBA value, the peroxide value and acid value were slowly increased until the 4th week, then were somewhat quickly increased in the 5th week. 2) The analysis of the fatty acid composition of the fresh Hair-tail lipid by meas of G.L.C method showed the order of the content quantities such as $C_{18}\;:\;1(44.3%),$ $C_{16}(29.22%),$ $C_{16}\;:\;1(11.3%),$ $C_{14}(6.6%),$ $C_{18}(5.4%),$ $C_{17}(2%),$ $C_{17}\;:\;1(1.1%),$ $C_{18}(2%),$ were found to be a trace. 3) The content of the unsaturated fatty acid was shown to be decreased while the level of the saturated fatty acid was increased during the sun drying.

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Feed Intake, Nutrient Utilization and Growth Rate of Jamunapari Goats Fed Sundried Leucaena leucocephala

  • Srivastava, S.N.L.;Sharma, K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.11 no.4
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    • pp.337-343
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    • 1998
  • In a feeding trial, Jamunapari male kids (18) of about 4 months age were equally divided into two groups of nine animals each. Goats in the experimental group were fed sun-dried pelleted Leucaena leucocephala leaves and those in the control group were offered a conventional diet without Leucaena leaves as per Kearl (1982) recommendations for a period of 6 months. Daily dry matter intake DMI/100 kg BW was $3.13{\pm}0.04kg$ in the Leucaena group and $3.30{\pm}0.05kg$ in the control. There were significant (p < 0.01) differences in the apparent digestibilities of DM, OM, CP, EE, CF and NFE being lower in the Leucaena group. Contents of digestible crude protein (DCP) and total digestible nutrients (TDN) were 11.40 and 52.20%, respectively, in the Leucaena group and 14.04 and 66.10%, respectively in the control. The nitrogen in the Leucaena group was not well utilized as compared to the control, though kids were in positive nitrogen balance in both the groups. The average daily weight gain of kids on pelleted Leucaena was $29.95{\pm}2.60g$ as against $42.09{\pm}3.24g$ observed in the control. The mean DMI/kg LW gain was significantly (p < 0.01) higher in the Leucaena group ($14.70{\pm}0.78kg$) as compared to the control ($11.55{\pm}0.46kg$). The Hb, BUN, SGOT and SGPT concentrations were statistically similar in both the groups. Histopathological examination of thyroid gland of goats sacrificed at the end of experiment did not reveal any signs of colloidal goitre associated with mimosine toxicity. No significant pathological alterations were observed in vital organs irrespective of dietary treatment. Sundried, pelleted Leucaena foliage appears to be a promising potential feed for growing goats without any significant deleterious effect.

Studies on the Shellfish Processing -4. The Changes of Pigment Retention and Water Absorbing Capacity of Dehydrated Surf Clam Meat during Storage- (패류 가공에 관한 연구 -4. 개량조개 건제품 저장중의 색소 잔존율 및 흡수율의 변화에 대하여-)

  • Lee, Eung-Ho;Hur, Jong-Wha;Han, Bong-Ho
    • Korean Journal of Food Science and Technology
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    • v.3 no.1
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    • pp.52-56
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    • 1971
  • The cooked surf clam meat was treated with BHA or EDTA, and then dehydrated by means of hot-air dehydration or sun drying. The dehydrated products were packed in glass bottle and stored for three months in the dark place. After three month storage, the pigment loss and water absorbing capacity of dehydrated products were compared with those of directly after dehydration. Both of the sun dried and hot-air dehydrated surf clam products showed a great deal of pigment loss during storage. The BHA treatment prior to dehydration of surf clam meat had good effects on the pigment retention, and the EDTA treatment had a weak effect on it during storage. The rate of rehydration of dehydrated surf clam products had markedly decreased during storage. And it could be seen that there was little difference among the rate of rehydration of the BHA or EDTA treated product and untreated one during storage.

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Treated Olive Cake as a Non-forage Fiber Source for Growing Awassi Lambs: Effects on Nutrient Intake, Rumen and Urine pH, Performance, and Carcass Yield

  • Awawdeh, M.S.;Obeidat, B.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.5
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    • pp.661-667
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    • 2013
  • The objective of this study was to investigate the effects of partial replacement of wheat hay with sun-dried (SOC) or acid-treated SOC (ASOC) olive cake on nutrient intake and performance of Awassi lambs. An additional objective was to study the effects of acid treatment of olive cake (OC) on its chemical composition and nutritive value. On DM basis, sun-drying of OC did not dramatically affect its chemical composition. On the other hand, treating SOC with phosphoric acid decreased (p<0.05) SOC contents of neutral detergent fiber. Twenty seven male lambs ($17.6{\pm}0.75$ kg body weight) individually housed in shaded pens were randomly assigned to one of three dietary treatments (9 lambs/treatment). Dietary treatments were formulated to be isocaloric and isonitrogenous by replacing 50% of wheat hay in the control diet (CTL) with SOC or ASOC and to meet all nutrient requirements. Dietary treatments had no effects on nutrient intake or digestibility except for ether extract. Lambs fed the SOC diet had (p = 0.05) faster growth rate, greater final body weight, and greater total body weight gain in comparison with the CTL diet, but not different from the ASOC diet. Additionally, lambs fed the SOC diet had greater (p = 0.03) hot and cold carcass weights than the ASOC diet, but not different from the CTL diet. However, feed conversion ratios and dressing percentages were similar among dietary treatments. In conclusion, replacing half of dietary wheat hay with SOC improved performance of Awassi lambs with no detrimental effects on nutrients intake or digestibility. No further improvements in the nutritive value of SOC and lambs performance were detected when SOC was treated with acid.

Changes of Seed Quality of Chinese Milk Vetch(Astragalus sinicus L.) During Seed Developmental Stages

  • Na, Chae-Sun;Lee, Yong-Ho;Hong, Sun-Hee;Jang, Cheol-Seong;Kang, Byeung-Hoa;Lee, Jong-Ki;Kim, Tae-Ho;Kim, Wook
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.52 no.4
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    • pp.363-369
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    • 2007
  • The objective of this study was to investigate the variation of Chinese milk vetch(Astragalus sinicus L.; CMV) seed quality after flowering. We tagged individual open flowers of CMV at the day of maximum flowering(11 May) in Seoul, Korea. Seed samples were harvested serially at 15, 20, 25 and 30 days after flowering(DAF). To compare with dried seeds, non-dried seeds were tested immediately after harvest and the remaining seeds were placed at room temperature for 4 weeks. Seed length, 1000 seed weight, moisture content, germination rate(GR), mean germination time(MGT), germination speed(GS), germination performance index(GPI) and physical dormancy rate(PDR) were investigated. Seed length increased to 2.6 mm and 1000 seed weight reached up to 2.2 g until 25 DAF. Seed moisture content dramatically decreased from 20 to 25 DAF. Moisture content of non-dried seed(7.5%) was similar to that of dried seed(5.5%) at 25 DAF. The rate of seed viability reached up to 94% at 25 DAF. In case of dried seed, GR increased up to 39% at 25 DAF whereas GR of non-dried seed varied from 5 to 10%. GS and GPI of dried seed were significantly higher than those of non-dried seed since 25 DAF. PDR of dried seed has decreased since 20 DAF, whereas PDR of non-dried seed has increased. GR, GS and GPI increased as PDR decreased. Our results evidenced that PDR might be one of major factor in variation of seed quality, of which development was completed at 25 DAF.

Model Development of Spray Dryer Absorber FGD Process (Spray Dryer Absorber 배연탈황공정의 모델 개발)

  • Jang, Sun-Hee;Oh, Eui-Kyung;Lee, Hyung-Keun;Kim, Sun-Geon
    • Clean Technology
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    • v.2 no.1
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    • pp.80-95
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    • 1996
  • A mathematical model has been developed for simulating the spray dryer absorber (SDA) used in semi-dry flue gas desulfurization process. Fundamental equations include the component mass and heat balances in both gas and droplet phases and the equation of motion for a single droplet. The model developed described the pilot-plant data much better than the existing SPRAYMOD-M model. The effect of the process variables, whose values were chosen within the operation limits of the actual pilot plants, on % $SO_2$ removal or conversion of the sorbent were calculated, and discussed in terms of $SO_2$ absorption rate, the residence time of flue gas, the velocity and drying time of droplets. Finally, the % $SO_2$ removal was calculated with two independent process variables and the results were shown on three-dimensional or two-dimensional diagrams with the lines of constant % $SO_2$ removal, so that they can be easily applied to preliminary design of the SDA.

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STUDIES ON THE SHELLFISH PROCESSING 2. Effect of Dehydration Method, EDTA or BHA Treatment on the Pigment Retention and the Water Absorbing Capacity of the Dehydrated Meat of the Surf Clam Mactra Sulcataria REEVE (패류 가공에 관한 연구 2. 건조 방법 및 EDTA, BHA처리가 개량조개 Mactra Sulcataria REEVE의 색소 잔존율 및 흡수율에 미치는 영향에 대하여)

  • LEE Eung-Ho;HUR Jong-Wha
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.3 no.1
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    • pp.33-37
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    • 1970
  • The effect of the dehydration method and EDTA or BHA treatment upon the pigment degradation and water re-absorption of the dehydrated meat of the surf clam Mactra Sulcataria REEVE was studied. Sun drying Produced a realer decrease in pigment content as compared to that produced by hot-air dehydration. The hot-air dehydrated product which was treated with BHA showed little pigment loss in comparison with the pigment of the fresh surf clam meat. The BHA treatment upon the dehydrated surf clam products had an outstanding effect on the pigment retention and the EDTA treated one had a weak effect on it. The hot-air dehydrated products more rapidly re-absorbed water than the sun dried one. It could be seen that there was tittle difference among the rate of rehydration of the BHA or EDTA treated product and untreated one.

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Microbiological Hazard Analysis and Verification of Critical Control Point (CCP) in a Fresh-Cut Produce Processing Plant -Case Study of a Fresh-Cut Leaf Processing Plant- (신선편이 농산물 가공업체의 미생물학적 위해 요소 분석 및 중점 관리 지점(CCP)의 검증 -신선편이 엽채류 가공업체를 대상으로-)

  • Kim, Su-Jin;Sun, Shih-Hui;Min, Kyung-Jin;Yoon, Ki-Sun
    • Journal of the East Asian Society of Dietary Life
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    • v.21 no.3
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    • pp.392-400
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    • 2011
  • The objectives of this study were to analyze environmental microbial contamination levels by sampling the surfaces of processing lines and equipment and to verify CCPs of the HACCP plan in a fresh-cut produce processing plant The level of airborne microorganisms in the processing plant was $10^1$ log CFU/plate/15min. Total plate counts and coliform groups of the processing facilities were 1~2 log CFU/100 $cm^2$. No E. coli or S. aureus were detected in the processing plant. However, total plate counts on the cutting board for raw materials and on the spin-dryer were $4.20{\pm}2.12$ log CFU/$cm^2$ and $4.57{\pm}0.92$ log CFU/$cm^2$, respectively. These levels were higher than the safe microbial level, and therefore, the chance of cross-contamination during processing was increased. According to the results of microbiological analyses, total aerobic bacteria and coliform groups of the samples were increased after the second washing and spin-drying steps, due to cross-contamination from the spin-dryer. Thus, an effective method that can be used for microbial control during the washing and drying steps is needed for microbial control in fresh-cut produce processing plants. The results of a verification study also suggest that modification of the HACCP plan is needed along with additional CPs, which were identified as a second washing, spin drying, and the cold storage of final products.

Accuracy Test of Coring for Measuring Annual Increment in Quercus mongolica, Kalopanax septemlobus, and Pinus densiflora

  • Park, Byung-Bae;Lim, Jong-Hwan;Park, Pil-Sun;Lee, Kyeong-Hak
    • Journal of Korean Society of Forest Science
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    • v.99 no.5
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    • pp.682-685
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    • 2010
  • Coring has been widely used to measure annual increment in temperate forest ecosystems. This method is attractive because cores can be taken in just one visit. However, the accuracy of this method has not been tested. We expected coring to be less accurate than band dendrometers because of the eccentricity of tree growth. We studied 41 trees at the Long Term Experimental Forest in Mt. Gyebang, which has been monitored with band dendrometers since 1996. We collected two tree cores from the south and north face of each tree, 10 cm below the growth band. Increment cores were measured to 0.01 mm under stereomicroscopy. Annual growth from 1997 to 2006 was 3.2 mm $yr^{-1}$ for Quercus mongolica, 3.5 mm $yr^{-1}$ for Kalopanax septemlobus, and 5.7 mm $yr^{-1}$ for Pinus densiflora. The difference between the two methods was 10% for Q. mongolica, 14% for K. septemlobus, and 4% for P. densiflora. Compaction in the corer and shrinkage during drying decreased diameter increment by 5.6% and 1.0% on P. densiflora, respectively. This study suggests that the two methods for annual increment measurement are very similar, but species specificity should be concerned for direct comparison.

Manufacturing Process and Component Analysis of Seawater Salt Using Seaweeds (해조류를 이용한 해수소금 제조기법 및 성분분석)

  • Lee, Seung-Won;Kim, Hyeon-Ju;Moon, Deok-Soo;Jung, Dong-Ho;Choi, Hark-Sun
    • Journal of Ocean Engineering and Technology
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    • v.21 no.4
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    • pp.61-65
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    • 2007
  • In this research, we have developed a manufacturing process for seawater salt by horizontal spray drying technique using the deep ocean water and seaweed(sea tangle). Deep ocean water, strong acidic electrolyzed water and strong alkaline electrolyzed water were used as extraction solvent of seaweed. Sodium content in seaweed extract solution by strong alkaline electrolyzed water was 1.63(mg/g), which was 3.5 times lower than of seaweed extract by strong acidic electrolyzed water. Major mineral content(Na, K, Ca) in seawater salt by deep ocean water were higher than strong acidic electrolyzed water and strong alkaline electrolyzed water. On the contrary, Mg contents in seawater salt by deep ocean water were lower than strong acidic electrolyzed water and strong alkaline electrolyzed water. Based on the results of seawater salt production using seaweed, it is possible to make law-salt efficiently.