• Title/Summary/Keyword: Difference of texture

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Antimicrobial Activities of Marinex and Preservative Characteristics of Soybean Curds Soaked in Diluted Marinex (마린엑스의 항균성 및 두부에의 침지 효과)

  • Seo, Kwon-Il;Kim, Yong-Taek;Kim, Hong-Chul
    • Food Science and Preservation
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    • v.7 no.3
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    • pp.326-330
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    • 2000
  • Antimicrobial activities of marinex and preservative characteristics of soybean curds soaked in diluted marinex were investigated. One hundred ml of marinex showed antimicrobial activities against Streptococcus mutans, Bacillus subtilis, Pseudomonas aeruginosa, Salmonella typhimurium, Escherichia coli and Escherichia coli O-157 on a paper disc test. The growth of the microorganisms were inhibited with 200${\mu}{\ell}/m{\ell}$ of culture media. pH of soybean curd treated with marinex decreased to 1 day and then slowly increased as storage time increase, which was higher than control after 1 day of storage and lower after that time. Little difference was observed between control and marinex treated soybean curd in color. Hardness and chewiness of the treated sample were higher than those of the control. The numbers of E. coli and bacteria of the treated sample were lower than those of control during storage. The inhibition of the growth of E. coli and bacteria was dose dependent.

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Physicochemical Characteristics of Pound Cake Added with $\beta-Glucan$ ($\beta-Glucan$ 첨가 Pound Cake의 이화학적$\cdot$관능적 특성)

  • Shin Yu-Mi;Kim Mi-Kyoung;Cho Han-Young;Kim Mee-Ree
    • Journal of the East Asian Society of Dietary Life
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    • v.15 no.6
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    • pp.728-737
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    • 2005
  • This study was conducted to evaluate the physicochemical characteristics of pound cake made of substituted flour with different amount of $\beta-glucan$ i.e. 3, 6 and $9\%$ respectively. $\beta-glucan$ is a functional food material produced from Agrobacterium sup. R259 KCTC 10197BP. The specific gravity and pH of dough were found to be increased according to $\beta-glucan$ content Rheological property such as adhesiveness of dough has no difference between control and $\beta-glucan$ added groups. The pH of baked pound cake was not significantly different between control and $\beta-glucan$ groups. The volume of baked pound cake wag not significantly different between control and the ones with up to $6\%$ $\beta-glucan$, Lightness (L), redness (a) and yellowness (b) value of Hunter color system of cake crumb were not significantly different among teated groups, except a value of crust in $9\%$ $\beta-glucan$ group. the moisture content of cake increased according to $\beta-glucan$ content. Hardness by texture analyser was decreased with increasing $\beta-glucan$ content although cohesiveness wag not changed in β$\beta-glucan$ groups, compared with the control. Sensory evaluation results showed that the mean scores of over·all acceptability in 3 and $6\%$ $\beta-glucan$ were higher than that of control. Based on these results, the addition of $\beta-glucan$ to pound cake up to $6\%$ was considered to be desirable especially in terms of texture.

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Variation of Retrogradation and Preference of Bread with Added Flour of Angelica keiskei Koidz during the Storage (신선초가루를 첨가한 식빵의 저장 중 노화도와 기호도의 변화)

  • 최옥자;정현숙;고무석;김용두;강성두;이홍철
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.1
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    • pp.126-131
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    • 1999
  • We have got the following results from tests in the course of time retrogradation and taste change in bread with added flour of Angelica keiskei Koidz, which had been stored in room temperature (27±2oC), refrigerating(2±1oC) and freezing( 20±1oC), respectively. Bread with the added flour showed a little lower degree of retrogradation than control group, and every group in room temperature retrograded from the very first day. The degree of retrogradation of the group in refrigerating was far greater comparing with the group in room temperature. The longer bread was stored, the lower the degree of retrogradation was, and the higher the adding rate of the flour got, the later its retrogradation happened. Especially the flour of this vegetable's stem turned out to be the most effective in retarding its retrogradation. Group stored 30 days in freezing didn't show a wide difference in retrograde comparing with the group before storage. Preference for color and shape of the flour added bread stored in room temperatue, refrigerating and freezing did not change significantly from the group before storage. Although preference decreased for flavor, texture, mouth feel and overall quality with the lapse of time, flour added group improved in preference for these factors comparing with the control group. Above all, added flour of pretreated stem proved to be the most effective in the sensory tests. With respect to the storing method, the group stored in refrigerating showed greater preference for the texture and mouth feel over the groups in room temperature and freezing. Flavor preference of the group in freezing was the lowest of all.

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A Study of the Usage and Sizing Selecting of the Apparels listed in On-line and Catalog Shopping (온라인 및 카탈로그 통신판매 의류 이용현황 및 치수선택에 대한 연구)

  • 김선희;최혜선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.7
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    • pp.1015-1025
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    • 2002
  • This study is aimed at investigating and developing the use and sizing system of the apparels listed in on-line and catalog shopping in Korea. This is a basic study for an apparel sizing system to be developed, which could be used to approach consumers more easily and provide improved fitness and accuracy in terms of size and style of apparels for fashion E-commerce. A survey was conducted among the consumers who are more than 18-years-old and purchased more than two times the apparels listed in on-line and catalog shopping of two selected catalog shopping enterprises, and its statistical results are analysed from 281 respondents' questionnaires. The results of the study are as follows: 1. According to the result of the survey on the use and sizing system of the apparels listed in. on-line and catalog shopping, the consumers who purchased once apparels continue doing so in the same manner. A catalog shopping is the most preferred form of shopping. The most dissatisfying part in purchasing apparels is a poor quality of 'texture', and the second biggest problem is about 'size'About 51.2 percent of the apparels were not worn or even returned, while the top reason for that is 'Inappropriate size' and 'color', and 'texture'comes next on the list. 2. According to the survey on the recognition-rate concerning common' body size, most respondents were aware of their height and weight, and So percent of respondents said that they were aware of their waist circumference. But, chest circumference and hip circumference were recognized only by 58.4 percent and 35.6 percent of respondents, respectively. 3. According to the survey on difference between men and women, the male consumers have less aware of hip circumference than the female counterparts. The females have much more dissatisfaction with apparel sizing system and show higher return-rate of purchased apparels than the males.

Effects of Traditional Salt on the Quality Characteristics and Growth of Microorganisms from Kimchi (자염(煮鹽)으로 담근 배추김치의 발효숙성 중 이화학적.관능적 특성 및 자염이 김치발효 미생물의 생육에 미치는 영향)

  • Kim, Hye-Ran;Kim, Mee-Ree
    • Journal of the Korean Society of Food Culture
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    • v.25 no.1
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    • pp.61-69
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    • 2010
  • This study was carried out to investigate the effects of various kinds of commercial salts, including sun-dried (Korea), purified, and traditional salts on the chemical and sensory properties and growth of microorganisms involved in kimchi fermentation. Kimchi was prepared by salting in 10% NaCl solution for 2 hours followed by addition of other spices and fermentation at $20^{\circ}C$. The decreases in pH suggested that kimchi fermentation can be classified into 3 steps: initial, intermediate, and final stages. In texture analysis, the hardness and fracturability of traditional salt kimchi were higher than those of regular kimchi. From the sensory evaluation test for kimchi, sensory scores were high for traditional salt addition, especially taste, overall preference and texture. Among various microorganisms related to kimchi fermentation, the growth of Leuconostoc mesenteroides, Lactobacillus plantarum, Pichia membranaefaciens and Escherichia coli were examined. Based on the conditions of kimchi fermentation, a 2% and 5% concentration of each salt were studied. Also, the conditions of the cultures at $37^{\circ}C$ were examined. There was no considerable difference in the growth of Leuconostoc mesenteroides, Lactobacillus plantarum, Escherichia coli in the different kinds of salts. However, the growth of Pichia membranaefaciens was strongly inhibited by a 5% concentration of traditional salt during incubation at $37^{\circ}C$.

The Effect of Soil Textures on the Flowering characteristics and Green Manure Yield of Crimson Clover (Trifolium incarnatum L.) in Upland Soil

  • Cho, Hyeon-Suk;Seo, Myung-Chul;Park, Tea-Sun;Kim, Jun-Hwan;Sang, Wan-gyu;Shin, Pyeong;Lee, Geon Hwi
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.6
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    • pp.705-711
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    • 2016
  • Crimson clover, a legume crop, is a landscape crop and green manure crop that can be sowing in spring and autumn. Its red flower blooms in May, and serves various roles such as landscape composition, weeds suppressing, prevention of soil loss and nutrient on sloping land and supplying nitrogen and organic matter in soil. Thus, in order to utilize this crop in agriculture land, we evaluated the growth characteristics of crimson clover cultivated in four different soil textures; sand, sandy loam, loam, and clay loam. The nitrogen content of crimson clover was $15.8g\;kg^{-1}$ and C/N ratio was 20.3. Its plant height was 42.5 cm in sandy loam and 49.5 cm in loamy, respectively, approximately 20 cm longer than the sand and clay loam. The crimson clover in sandy loam and loam bloomed about seven days earlier than those in sand and clay loam. Regarding number of flower per hill and flower length, there were no difference among the soil textures. Dry weight of crimson clover for sandy loam and loam was $2.5Mg\;ha^{-1}$ and $2.3Mg\;ha^{-1}$, respectively, $0.8{\sim}1.1Mg\;ha^{-1}$ higher than that of sand and sandy loam. Plant height and dry weight of crimson clover increased with delaying harvest time. Nitrogen contribution in loam and clay loam was $51.3kg\;ha^{-1}$ and $53.5kg\;ha^{-1}$, respectively. Therefore, in terms of flowering properties and dry weight, the proper soil texture for the growth and development of crimson clover was sandy loam and loam.

Effect of Mixing Ratio of White and Germinated Brown Rice on the Physicochemical Properties of Extruded Rice Flours (백미와 발아현미의 혼합비율이 압출성형 멥쌀가루의 이화학적 특성에 미치는 효과)

  • Kim, Ji Myoung;Yu, Mengying;Shin, Malshick
    • Korean journal of food and cookery science
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    • v.28 no.6
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    • pp.813-820
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    • 2012
  • To develop the high quality gluten-free rice products with health functionality and desirable texture with moistness, the physicochemical properties of extruded rice flours prepared from the mixture of germinated brown and white rices were investigated. The domestic organic Samgwangbyeo was used to make white and germinated brown rices. White rice (WR) was dried after soaked for 6 h at $15{\pm}3^{\circ}C$ and mixed with germinated brown rice (GBR) with different mixing ratios (100:0, 75:25, 50:50, 25:75, 0:100). The operating conditions of twin screw extruder were 250 rpm of screw speed, $120^{\circ}C$ of barrel temperature, and 25% moisture content of rice flour. The ash, crude protein and crude lipid contents were significantly different (p<0.05) and those of extruded GBR were the highest values, but those of extruded WR were the lowest. The color difference of extruded WR based on white plate showed the lowest among them. The water binding capacity (334.16%), swelling power (8.83 g/g), solubility (33.13%), and total starch (79.50%) were the lowest in extruded GBR. The viscosities of all extruded rice flours by RVA were maintained during heating. The peak and total setback viscosities of extruded rice flours ranged 127-352 and 58.0-85.5 cP, respectively. The novel food biomaterial from germinated brown rice as well as white rice was developed by twin screw extruder. The extruded rice flours control the moistness to improve the texture and also have functional materials, dietary fiber, GABA, and ferulic acid, etc to increase quality of gluten free rice products.

Effect of Starch and Pectic Substances on Potato Texture (전분과 펙틴질이 감자의 텍스쳐에 미치는 영향)

  • 이진희;이혜수
    • Korean journal of food and cookery science
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    • v.5 no.1
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    • pp.43-47
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    • 1989
  • For identifying the cause of the difference from the texture of mealy potatoes-Namjak and soomi- and soggy Potatoes-Daeji and Dowon-, starch and pectic substances and their relating materials were analyzed, and polygalacturonase(PG) activity was measured. The shape and size of Namjak and soomi starch granules were circular and diameter ranged from 0.02 to 0.024 mm. In the meanwhile, Daeji and Dowon had two sizes of starch granules; larger one tend to be oval in shape and diameter of longer side ranged from 0.04 to 0.045 mm, that of narrower side ranged from 0.02 to 0.03 mm and smaller one was rather circular in shape and average deameter was below 0.005 mm. Oval shaped potato starch grancules under polarized light showed dark cross of V-shape, whereas circular granules showed cross shape. Total sharch contents of Namjak and soomi were higher than that of Daeji and Dowon. The changes of pectic substances were the decrease of the insoluble pectin and the increase of the soluble pectin, and the reduction of the total pectic substance content after cooking. This phenomena were more prominent in Namjak and Soomi than in Daeji and Sowon. PG activities of Namjak and Soomi were greater than Daeji and Dowon. Calcium contents of Namjak and Soomi were lower than Daeji and Dowon. Phytic acid contents of Namjak, Soomi, Daeji and Dowon were 0.093%, 0.096%, 0.078%, and 0.081%, respectively. Hardness of Namjak and Soomi were less than Daeji and Dowon. The mealy potatoes had higher starch contents, higher tendency to pectin solubilization, higher PG activities, lower calcium contents and less hardness than the soggy Potatoes.

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Varietal Variation of Gelatinization and Cooking Properties in Rice having Different Amylose Contents (쌀 품종의 아밀로오스 함량에 따른 호화 및 취반 특성 비교)

  • Yoon, Mi-Ra;Oh, Sea-Kwan;Lee, Jeong-Heui;Kim, Dae-Jung;Choi, Im-Soo;Lee, Jeom-Sig;Kim, Chung-Kon
    • The Korean Journal of Food And Nutrition
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    • v.25 no.4
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    • pp.762-769
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    • 2012
  • In order to study the cooking characteristics of four rice cultivars of Seolhyangchal, Baegjinju, Ilpum and Haiami, we investigated the relationship between the textures of cooked rice and their physicochemical properties. Different levels in grain weight. length/width ratio and amylose content were observed among the four rice cultivars. There was no significant difference in the amylopectin chain length distribution among the cultivars. Water absorptions of rice grains during soaking were completed between 30 and 40 min, with Haiami showing the slowest absorption. Significant differences in the viscosity properties of rice flour were found by a Rapid Visco Analyser. Baegjinju with low amylose content had the highest viscosity in paste breakdown. According to the DSC results of rice starches, there were significant differences in the onset, peak and conclusion temperatures of the endothermic peak. Gelatinization enthalpy showed energy content changes between 4.20 and 6.97 J/g, with the lowest change in Haiami. Texture properties of cooked rice were assessed using a Texture Analyzer, which showed that the hardness of cooked rice was decreased with soaking than without soaking. However, this finding was not applicable for Haiami rice.

Effects of Mulberry Leaves Powder on the Cooking Characteristics of Noodle (뽕잎분말의 첨가가 국수의 조리특성에 미치는 영향)

  • 김영애
    • Korean journal of food and cookery science
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    • v.18 no.6
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    • pp.632-636
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    • 2002
  • Mulberry leaves noodles were prepared with composite flour by the addition of various levels of mulberry leaves powder of 100 mesh particle site. The characteristics of cooked noodle including color, texture, cooking properties were measured, and sensory evaluation was performed. The L and a values of cooked noodle decreased as more wheat flour was substiruted with mulberry leaves powder. And the b value of noodle containing mulberry leaves powder was higher than control, but b value did not increase as the ratio of powder increased. The increase in cooking weight and volume was greater with cooked noodles of higher content of mulberry leaves powder. The turbidity of soup and eluted solid content increased as the content of powder increased, indicating higher cooking loss. There was not much difference in hardness among cooked noodles, but cohesiveness and springiness decreased as the ratio of mulberry leaves powder increased, while adhesiveness increased. The results of sensory evaluation showed that cooked noodles containing 4% and 6% mulberry leaves powder were acceptable as much as wheat four noodle in terms of color, texture, taste and flavor. But the overall acceptability of mulberry leaves noodle was lower than wheat now noodle.