In this study, monokaryons of "Heukari" (Pleurotus ostreatus) and "Hosan" (Pleurotus pulmonarius) were separated to remove the cell wall, and a cross-species protoplast fusion was developed through chemical treatment with polyethylene glycol. The protoplast-fused PF160306 and PF160313 strains have a culture period of 10 and 2 days shorter than that of the "Heuktari" and "Hosan" cultivars, respectively. Furthermore, the growth of the strains was faster than that of the existing cultivars. The yield was 135.9 g per bottle, which was approximately 8% higher than that of the commercially available "Hosan" cultivar; however, it was not statistically significant. A growth survey was conducted after treatment at five temperatures (15, 18, 21, 23, and 25℃). The growth of the strains accelerated with the increase in temperature. However, at 21℃, the yellow color of pileus was the brightest. Band pattern, assessed using URP Primer 7, was similar to that of the "Hosan" cultivar. The DPPH radical scavenging capacity and polyphenol content were 62.5% and 43.5 mg/mL, respectively, for "Sunjung" and 65.7% and 49.9 mg/mL, respectively, for PF160313. Furthermore, the antihypertensive activities of the "Sunjung" cultivar and PF160313 were similarly high at 74% and 75%, respectively. In conclusion, cross-species hybridization via the protoplast fusion technique can be used for obtaining primary data for mushroom breeding to develop new varieties. In addition, the protoplast fusion technique might aid in expanding the market for yellow mushrooms.
The present study was carried out to investigate the effects of maturation media on penetrability of pig oocytes by liquid boar sperm coincubated with different sperm concentrations in a modified Trisbuffered medium (mTBM). Follicular oocytes collected from ovaries of prepubertal gilts were matured in a modified TCM-199 (mTCM-199) medium, modified Waymouth MB 752/1 (mWaymouth MB 752/1) medium or NCSU-23 medium. Oocytes (30~40) were transferred into each well of a Nunc 4-well multidish containing 0.5 $m\ell$ maturation medium. The spermich portion of ejaculates with greater than 90% motile sperm were used in the experiment. The semen was cooled 22 to 24$^{\circ}C$ over 2 h period. The semen was diluted with Beltsville Thawing Solution (BTS) extender at room temperature to give 2$\times$10$^{8}$ sperm/$m\ell$ in 100 $m\ell$ plastic bottle. Liquid boar semen of 30 $m\ell$ in 100 $m\ell$ plastic bottle was kept at 17$^{\circ}C$ far 5 days. The sperm with greater than 70% motility after day 5 of storage were used for in-vitro fertilization (IVF). After 44 h maturation of immature oocytes in 5% $CO_2$in air at 38.5$^{\circ}C$, cumulus cells were removed and oocytes (30~40) were coincubated for 6 h in 0.5 $m\ell$ mTBM fertilization medium with five different (1$\times$10$^{6}$ , 2$\times$10$^{6}$ , 4$\times$10$^{6}$ , 6$\times$10$^{6}$, 10$\times$10$^{6}$$m\ell$) sperm concentrations. At 6 h after IVF, oocytes were transferred into 0.5 $m\ell$ NCSU-23 culture medium fur further culture of 6 h. At 12 h after IVF, sperm penetration, polyspermy and male pronuclear formation of oocytes were evaluated. Oocytes of NCSU-23 maturation medium decreased polyspermy and increased male pronuclear formation compared to those of mTCM199 and mWaymouth MB 752/1 maturation media. Of oocytes matured in NCSU-23 medium and inseminated in mTBM medium with 2~4$\times$10$^{6}$$m\ell$ sperm concentrations, 50.8~50.9% showed sperm penetration, 13.3~19.5% polyspermy and 43.9~45.4% male pronuclear formation. In conclusion, we found out that oocytes matured in NCSU23 medium and inseminated in mTBM medium showed superior invitro fertilization compared to those matured in mTCM199 and mWaymouth MB 752/1 maturation media and inseminated in mTBM medium. The optimum sperm concentrations for in-vitro fertilization of oocytes matured in NCSU-23 medium by liquid boar semen stored at 17$^{\circ}C$ for 5 days were 2~4$\times$10$^{6}$$m\ell$.
Li, X.Z.;Yan, C.G.;Choi, S.H.;Long, R.J.;Jin, G.L.;Song, Man K.
Asian-Australasian Journal of Animal Sciences
/
v.22
no.1
/
pp.82-89
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2009
Two in vitro experiments were conducted to examine the effects of propionate precursors in the dicarboxylic acid pathway on ruminal fermentatation characteristics, $CH_4$ production and degradation of feed by rumen microbes. Fumarate or malate as sodium salts (Exp. 1) or acid type (Exp. 2) were added to the culture solution (150 ml, 50% strained rumen fluid and 50% artificial saliva) to achieve final concentrations of 0, 8, 16 and 24 mM, and incubated anaerobically for 0, 1, 3, 6, 9 and 12 h at $39^{\circ}C$. For both experiments, two grams of feed consisting of 70% concentrate and 30% ground alfalfa (DM basis) were prepared in a nylon bag, and were placed in a bottle containing the culture solution. Addition of fumarate or malate in both sodium salt and acid form increased (p<0.0001) pH of culture solution at 3, 6, 9 and 12 h incubations. The pH (p<0.0001) and total volatile fatty acids (VFA, p<0.05) were enhanced by these precursors as sodium salt at 3, 6 and 9 h incubations, and pH (p<0.001) and total VFA (p<0.01) from fumarate or malate in acid form were enhanced at a late stage of fermentation (9 h and 12 h) as the addition level increased. pH was higher (p<0.001) for fumarate than for malate as sodium salt at 3 h and 6 h incubations. Propionate ($C_3$) proportion was increased (p<0.0001) but those of $C_2$ (p<0.05) and $C_4$ (p<0.01 - p<0.001) were reduced by the addition of sodium salt precursors from 3 h to 12 incubation times while both precursors in acid form enhanced (p<0.011 - p<0.0001) proportion of $C_3$ from 6h but reduced (p<0.018 - p<0.0005) $C_4$ proportion at incubation times of 1, 3, 9 and 12 h. Proportion of $C_3$ was increased (p<0.05 - p<0.0001) at all incubation times by both precursors as sodium salt while that of $C_3$ was increased (p<0.001) from 6h but $C_4$ proportion was decreased by both precursors in acid form as the addition level increased. Proportion of $C_3$ was higher (p<0.01 - p<0.001) for fumarate than malate as sodium salt from 6 h incubation but was higher for malate than fumarate in acid form at 9 h (p<0.05) and 12 h (p<0.01) incubation times. Increased levels (16 and 24 mM) of fumarate or malate as sodium salt (p<0.017) and both precursors in acid form (p<0.028) increased the total gas production, but no differences were found between precursors in both chemical types. Propionate precursors in both chemical types clearly reduced (p<0.0001 - p<0.0002) $CH_4$ production, and the reduction (p<0.001 - p<0.0001) was dose dependent as the addition level of precursors increased. The $CH_4$ generated was smaller (p<0.01 - p<0.0001) for fumarate than for malate in both chemical types. Addition of fumarate or malate as sodium type reduced (p<0.004) dry matter degradation while both precursors in both chemical types slightly increased neutral detergent fiber degradability of feed in the nylon bag.
The Maori's traditional clothing materials, basic forms of dress, and the pattern and technique of tatoo were examined in the present study in order to deepen the appreciation of the cultural heritage of the Maori. The research method employed was the analysis of written materials. And a fild-trip was also made for the study. The study was limitted to the traditional culture of body adornment of the Maori including the clothing which is preserved and practicing by them at the present day, and the origin and the process of the historical development of those are not included in the scope of the present study. Followings are the results of the study: (1) By far the most widely used fiber for Maori clothing is abtained from what is commonly called New Zealand Flax. The fiber of kiekie(Freycinetia baueriana) and cabbage trees(Cordyline spp.) may also be used. The strong, long-lasting fiber of toi(cordyline indivisa) is used for a prestige warrior's cloak. Flat strips of ti kauka(Cordyline australi) are also used as thatch on rain cloaks. (2) Regardless of technique used, Maori weaving is always worked horizontally from left to right. Traditionally the work was suspended between two upright turuturu or weaving sticks. As the work progressed a second pair of uprights was used to keep the work off the ground. These uprights were moved forward as required. Because the weaver sat on the ground, the working edge was kept at a height that was comfortable to reach. No weaving tools are used, the wefts(aho) being manipulated by the fingers. The two main Maori weaving techniques are whatu aho patahi(single-pair twining) and whatu aho rua(double-pair twining). (3) The Maori wore two basic garments - a waist met and a cloak. The cloth of commoners were of plain manufacture, while those of people of rank were superior, sometimes being decorated with feather or dyed tags and decorated borders. Children ran more-or-less naked until puberty, being dressed only for special events. Some working dress consisted of nothing more than belts with leaves thrust under them. Chiefs and commoners usually went barefoot, using rough sandals on journeys over rough country (4) The adornment of men and women of rank was an important matter of tribal concern as it was in chiefly persons that prestige of the group was centred, The durable items of Maori persons adornment were either worn or carried. Ornaments of various kinds were draped about the neck or suspended from pierced earlobes. Combs decorated the head. Personal decorations not only enhanced the appearance of men and women, but many had protective magical function. The most evident personal ornament was the hei-tiki made of jade or other material. Maori weapons were treasured by their owners. They served on bottle and were also personal regalia. A man of rank was not fully dressed without a weapon in hand. Also weapons were essential to effective oratory. (5) No man or woman of rank went without some tattoo adornment except in extremely rare instances when a person was too sacred to have any blood shed. The untattooed were marked as beeing commoners of no social standing. This indelible mark of rank was begun, with appropriate rite and ritual, at puberty. And tattoo marked the person as being of a marriageable age. Maori tattoo was unlike most traditional tattoo in that its main line were 'engraved' on the face with deep cuts made by miniature bone chisels. The fill-in areas were not tattooed with cuts but with the multiple pricks of small bone 'combs' that only lightly penetrated the skin surface. The instrument of tattoo consisted of small pots of pumice or wood into which was placed a wetted black pigment made from burnt kauri gum, burnt vegetable caterpillars or other sooty materials. A bird bone chisel or comb set at right angles on a short wooden handle was dipped into the gigment, that a rod or stick was used to tap head of this miniature adze, causing penetration of the skin surface. Black pigment lodged under the skin took on a bluish tinge. A full made facial tattoo consisted of major spirals with smaller spirals on each side of the nose and sweeping curved lines radiating out from between the brows over the forehead and from the nose to the chin. The major patterns were cut deep, while the secondary koru patterns were lightly pricked into the skin.
The U.S. government have concerned about food safety over the last two decades. The concept of the continuum, “from farm to table” was created to explore ways to prevent foodborne illnesses in all stages of food systems. On the continuum, consumers were recognized as the last line of defense to prevent foodborne illnesses, and much efforts were made to educate them safe food handling. This research was conducted to investigate infant formula handling and hand-washing behaviors of low-income families, especially parents and guardians of infants. The subject was selected from participants of the Special Supplemental Nutrition Program for Women, Infants, and Children(WIC), a federal program for low-income families in the U.S. Stratified 200 local WIC offices were randomly selected based on the number of WIC participants in each state, and 20 randomly selected WIC participants from each selected office were asked to complete questionnaires. SPSS for Windows was used for statistical analyses including frequency, cross- tabulation, and chi-square analyses. A total of 87 WIC offices returned completed question-naires (N = 1,598), and 492 were parents/guardians of infants. Most respondents were white (51.3%), high school graduates (41.5%) , and participated in WIC>1 yew. Most respondents (80.9%) teamed about food safety from WIC, and only limited number of respondents (10.2%) used the Internet for food safety information. Most respondents stored prepared formula safely (94.6%) and discarded formula left in the bottle after feeding (84.5%) , but fewer used brushes to wash formula bottles (71.3%) and boiled water(15.2%) Chi-square analyses showed respondents in different race/ethnicity had different food handling behaviors. Respondents showed generally good hand-washing behaviors as 94.2% always washing hands after using restroom, 93.2% after touching meat items, and 87.l% before preparing foods. Fewer respondents, however, washed hands after changing baby diapers (77.0%) and touching pets (67.2%). Researchers concluded that WIC education on food safety was effective, as limited food safety education covered during WIC education were followed well (e.g., storing prepared formula and discarding leftover). However, results also indicated that there were many behaviors needed to be reinforced especially to overcome family tradition and culture on food handling behaviors. The WIC may serve as good food safety resources and education agents utilizing mandatory education sessions because the vast amount of food safety information on the Internet was not readily accessible for this low-Income Population.
The chemical media composition and culture conditions were optimized for mycelial growth of Phellinus igniarius 26005. The method of solid-state fermentation, cultivation of basidiomycetal strains in various grains, was developed. Media composition for optimal growth of Phellinus igniarius 26005 was made of 7.0% malt extract, 0.3% bacto soytone, and 0.2% yeast extract. The optimum condition for mycelial growth was $28^{\circ}C$ and pH 7.0, respectively. For the mass cultivation of mycelia, the hydrated grains with cold water, were put into the plastic bottle. The mycelial growth rate in the bottled grains was high in the early stage with inoculation of homogenized mycelium. The activity of mycelium was maintained by adding sterilized water in the middle of cultivation. The glucosamine content which determins the mycelial growth rate in solid material was in the order of job's tears>barley>black soybean>wheat>malt soybean>brown rice>sorghum>glutinous rice.
This study was carried out to investigated mixing ratio of redginseng marc using organic waste resource for production cost-reduction of oyster mushroom. Redginseng marc were examined as substitute of cottonseed meal which was primary nutritive material of mushroom growing substrate. Total nitrogen and carbon source of redginseng marc was 45% and 2.7%, respectively and C/N ratio was 16.7. Total nitrogen source and pH of substrate mixed with redginseng marc was 4.6~4.9 and 2.5~2.8, respectively. The contents of $P_2O_5$, $K_2O$ and MgO were decreased by increasing redginseng marc, but increased at the 20% redginseng marc. The contents of CaO was increased by increasing redginseng marc, but there was no significant difference in $Na_2O$ content. The more mixing ratio of redginseng marc was increased in column test, the more mycelial growth growed slowly. Yields of fruiting body was no significant difference compared with control group by adding of 10~50% redsingeng marc instead of cottonseed meal, but decreased sharply at only 20% redsingeng marc without cottonseed meal. The L value of pileus by increasing redginseng marc decreased during mushroom harvest, but there was no significant difference in the a-value and the b-value.
Park, Jae-Seong;Choi, Jae-Sun;Rho, Chang-Woo;Yun, Tae;Lee, Chang-Soo
Journal of Mushroom
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v.8
no.4
/
pp.137-141
/
2010
This experiment was carried out to clarify the effect of light qualities on the growth characteristics and yield of fruiting body in the cultivation of Lyophyllum ulmarium. The intensity of illumination by light qualities was in the order of white light(2,270Lux), yellow light(1,750Lux), blue light(460Lux) and red light(400Lux). An investigation of fruiting body showed these results that the pileus size and stipe diameter of fruiting body on CBM(Chungbuk mushroom)-1757 were much larger than Hypsizigus marmoreus, and an effect of yellow light seemed to be better than those of another light. In comparison with Hypsizigus marmoreus, the growth duration of CBM-1757 was shortened by 8 days which included 2 days for mycelial culture, 1 day for first pinning requirement and 1 day for growth. The growth duration in yellow light illumination was about 70 days showing the tendency of 2~4 days reduction. There were no differences in results such as number of effective stem and fresh weight. The yield of fruiting body per bottle in CBM-1757(95.6g) was little higher than Hypsizigus marmoreus(94.8g). By a white light's standard, the yields of blue and red light illumination were decreased by 2~9%, but that of yellow light illumination was increased by 8%. The chromaticity results showed that brightness, red and yellow coloration of CBM-1757 were higher than those of Hypsizigus marmoreus, and yellow light treatment was more effective than another light.
Ha, Tai-Moon;Chi, Jeong-Hyun;Ju, Young-CheoI;Kim, Hee-Dong
Journal of Mushroom
/
v.1
no.1
/
pp.34-43
/
2003
This study was carried out to determine the proper pin-heading induction time(spawn running time) when different incubation temperature were applied to Pleurotus ostreatus(Chunchu 2ho, Suhan 1ho, Heukpyung). Incubation period was 17 days at 23 and 21 days at 17 for Chunchu 2ho, 17 days at 23 and 26 for Heukpyung, and 22~23 days at 17~23 for Suhan 1ho. Incubation period for Suhan 1ho was not significantly affected by incubation temperature. The time required for initial pin-heading was 4~5 days at 17, 20, 23 and 26 for Chunchu 2ho as well as Heukpyung, and was 3 days at 17, 20, 23 and 5~6 days at 26 for Suhan 1ho. As the incubation period became longer, the available fruit-bodies at Chunchu 2ho were made more but they were short. The yield of Chunchu 2ho and Heukpyung increased when incubated for 22~27 days at 20~23 and that of Suhan 1ho also increased when incubated for 22~23 days at 17~23.
Lee, Sun Young;Ahn, Yu Jin;Kim, Ji Yeon;Song, Jin;Choi, Hye-Sun
The Korean Journal of Food And Nutrition
/
v.26
no.4
/
pp.753-758
/
2013
This study evaluated the quality characteristics for optimization of premix-type Buckwheat (Fagopyrum esculentum) Soksungjang (BS). First, according to the amount of salt (8, 10, 12%), coliform counts were not detected in BS with 10 or, 12% salt at 21 days and Bacillus subtilis HJ 18-4 as a starter at 7 days. Therefore, 10% salt with starter culture might be considered as suitable conditions for safety. Second, according to the ratio of water (1:1, 1:1.5, 1:1.8), BS prepared with the same weights of meju powder and water showed the highest aminotype nitrogen content (688.76mg%) at 35 days; thus, an adequate fermentation state was established at this condition compared to others. Third, according to the type of container (pot, plastic, glass), the aminotype nitrogen contents were higher in the plastic container and pot than in the glass bottle. Lastly, according to the batch size (1.25, 2.5 kg), the coliform of the 2.5 kg sample decreased faster than that of 1.25 kg samples at 14 days. These results suggest that BS prepared with the same ratio of water and meju powder fermented with HJ 18-4 as a starter and 10% salt in a pot, plastic container (3 weeks) and glass container (4 weeks) showed desirable fermentation qualities.
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