• 제목/요약/키워드: sensory and physical characteristics

검색결과 361건 처리시간 0.028초

스팀빵의 발효횟수에 따른 품질특성 변화 (Quality Characteristics of Steamed Bread with Repeated Fermentation Processes)

  • 최기보;김현숙;김성오;류홍수;류은순
    • 한국식품영양과학회지
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    • 제40권4호
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    • pp.593-598
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    • 2011
  • 연구에서는 스팀빵을 1차부터 5차까지 발효시켜 일반성분, 물리적 특성, 전분 가수 분해율, 단백질 소화율, 관능평가를 실시하여 최대 적정 발효횟수를 파악하고자 하였으며 이에 대한 결과는 다음과 같다. 일반성분 중 수분함량은 1차 발효 스팀빵이 가장 낮았고 5차 발효 스팀빵이 유의적(p<0.01)으로 가장 높았고 단백질 함량은 1차 발효 스팀빵이 유의적(p<0.01)으로 가장 높았다. 물리적 특성에서 비용적은 1차 발효 스팀빵이 유의적(p<0.05)으로 가장 낮았고 발효횟수가 증가함에 따라 증가하였다. 물성 특성에서는 발효횟수에 따라 견고성, 검성이 유의적(p<0.01)으로 감소하였고 응집성(p<0.05)은 유의적으로 증가하였다. 전분 가수분해율은 5차 발효 스팀빵이 1, 2, 3차 발효 스팀빵보다 유의적(p<0.05)으로 높게 나타났고, 단백질 소화율은 5차 발효 스팀빵이 1, 2, 4차보다 유의적(p<0.05)으로 높았다. 관능평가에서는 색상의 흰 정도는 4, 5차 발효 스팀빵에서 유의적(p<0.01)으로 높게 나타났고 기공의 균일성은 4, 5차 발효 스팀빵에서 유의적(p<0.01)으로 낮은 점수를 보였다. 촉촉한 정도(p<0.01), 응집성(p<0.01), 씹힘성(p<0.05), 전반적인 기호도(p<0.01)는 4차 발효 스팀빵이 유의적으로 높았다. 전체 평균 점수에서도 4차 발효 스팀빵이 유의적(p<0.01)으로 가장 높은 관능평가 점수를 보였다. 이상을 살펴볼 때, 스팀빵의 발효횟수가 증가함에 따라 관능적인 측면에서 5차 발효까지는 과발효에 의한 불쾌취가 없었고 색상, 촉촉한 정도, 씹힘성, 단맛 등이 증가하였으며 전반적인 기호도에서도 높은 점수를 보였으므로 발효 스팀빵의 발효횟수를 늘린다면, 부드러운 질감이 향상되어 입안의 식감을 높일 수 있는 제품 개발이 가능할 것으로 여겨진다. 또한, 발효횟수를 증가시킨 경우, 단백질 함량이 감소하고, 전분 가수분해율과 단백질 소화율은 증가하였다. 따라서 기존 스팀빵의 발효횟수를 적절히 증가시키는 경우, 관능적, 물성적 측면뿐 아니라 소화율도 높일 수 있는 향상된 품질의 신제품 제조가 가능할 것으로 사료된다.

송이버섯을 이용한 과립차 제조 조건 확립에 관한 연구 (A Study on the Establishing the Preparation Conditions for Pine Mushroom(Tricholoma matsutake Sing.) Granular Tea)

  • 박미란;최수근;변광인
    • 동아시아식생활학회지
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    • 제17권5호
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    • pp.689-695
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    • 2007
  • The pine mushroom is recognized as being a valuable functional food and is considered a prized mushroom. One of the product development plans for this mushroom is a granular tea. Thus, for this study, the physical properties and sensory qualities evaluation of such a this product were measured. First, we extracted pine mushrooms at various temperatures(50, 60, 70, 80 and $90^{\circ}C$) to make a pine mushroom granular tea. The extraction yield and free amino acid content were greatest in the $50^{\circ}C$ extraction. This extract that was acquired at $50^{\circ}C$ was lyophilized and pulverized to make the granule tea. According to the results, the granular tea made from 4% pine mushroom powder had the best taste, with a Brix value of 1.9% and a pH of 4.12. The L-value of chromaticity was 49.00, the a-value -0.85, and the b-value was 1.28.

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매실과육과 매실착즙박을 이용한 Fruit leather의 제조와 그 특성 (Manufacturing and Physical and Chemical Characteristics of Fruit Leathers Using Flesh and Pomace of Japanese Apricots (Prunus mume Sieb. et Zucc))

  • 강민영;정영민;은종방
    • 한국식품과학회지
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    • 제31권6호
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    • pp.1536-1541
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    • 1999
  • 매실과육과 그 가공부산물인 매실착즙박을 대상으로 하여 과채류 가공품의 하나인 fruit leather를 제조한 후 그 성상 및 이화학적 특성을 조사한 결과는 다음과 같았다. 매실의 이용성을 증진시키기 위하여 매실과육과 매실착즙박을 주원료로 제조된 fruit leather는 각각 엷은 황갈색과 진한 황갈색을 나타내고 유연성을 갖는 leathery sheet형태의 성상을 보였다. 매실과육을 이용한 fruit leather는 총 식이섬유 4.06%로 분석되었고, 매실착즙박을 이용하여 제조한 fruit leather의 총 식이섬유는 7.82%로 조사되었다. 매실과육과 매실착즙박을 이용한 fruit leather의 열량은 각각 386 kcal와 352 kcal로 분석되었다. 이들의 수분활성도(Aw)는 각각 0.36, 0.48로써 미생물적으로 안정함을 보였으며, 색도에 있어서는 매실과육을 이용한 fruit leather의 L, a, b 값들이 더 높았고 color 측정항목에 대한 관능검사결과에서도 더 높은 선호도를 보였다. Texture analyzer를 이용하여 fruit leather의 texture를 측정한 결과 각 항목마다 매실과육을 이용한 fruit leather의 물리적 특성들이 높은 값으로 조사되었으며, 두 시료간의 유의적인 차이를 보였다. (P<0.01). Fruit leather의 관능검사결과 texture 항목 중 chewiness와 stickiness는 시료간의 유의적인 차이가 없었으며(P<0.01), color의 경우 매실과육을 이용한 fruit leather의 선호도가 높았으나 flavour 및 전체적인 맛은 매실착즙박을 이용한 fruit leather의 선호도가 높았다. 색소를 이용하여 매실착즙박을 이용한 fruit leather의 색깔을 향상시킨다면 훌륭한 스낵제품의 가능성이 있을 것으로 생각된다.

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노년기 여성의 의복원형설계법 연구 -60세 이상을 중심으로- (A Study on Bodice Pattern for Elderly Women's Clothing)

  • 임원자;김향인
    • 한국의류학회지
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    • 제9권3호
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    • pp.17-26
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    • 1985
  • The purpose of this study is to develop a bodice pattern drafting method for Korean elderly women over sixty years old on the basis of their physical characteristics which differ from those of adult women. The study is composed as follows; 1. One hundred and five elderly women were measured on 20 items. Twenty-five items including 20 measured items and 5 calculated items were analyzed statistically. 2. A new method was developed based on the results of data analysis. Basic shells constructed from the patterns were examined through three fitting tests for completion. 3. The sensory evaluation was applied to evaluate the new pattern for elderly women by comparing it with the conventional pattern for adult women. A five-point rating scale was developed for the evaluation. According to a statistical analysis of the result of the 20 items on the questionnaire, all the items showed significant differences (a$\leqq$0.01) between the two, with the new pattern having higher scores.

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Effect of Modified Atmosphere Packaging and Vacuum Packaging on Quality Characteristics of Low Grade Beef during Cold Storage

  • Hur, S.J.;Jin, S.K.;Park, J.H.;Jung, S.W.;Lyu, H.J.
    • Asian-Australasian Journal of Animal Sciences
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    • 제26권12호
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    • pp.1781-1789
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    • 2013
  • Many studies have been carried out with respect to packaging methods and temperature conditions of beef. However, the effects of packaging methods and temperature conditions on the quality characteristics have not been extensively studied in low-grade beef. Low-grade beef samples were divided into 3 groups (C: ziplock bag packaging, T1: vacuum packaging, and T2: modified atmosphere packaging (MAP), $CO_2/N_2$ = 3:7) and samples were stored at $4^{\circ}C$ for 21 days. The water-holding capacity (WHC) was significantly lower in T1 than in the other samples up to 14 days of storage. The thiobarbituric acid reactive substances and volatile basic nitrogen values were significantly lower in T1 and T2 than in C after 7 to 14 days of storage. The total bacterial counts were significantly lower in T1 and T2 than in C after 14 days of storage. In a sensory evaluation, tenderness and overall acceptability were significantly higher in T1 and T2 than in C at the end of the storage period (21 days). We propose that the MAP method can improve beef quality characteristics of low-grade beef during cold storage. However, the beneficial effects did not outweigh the cost increase to implement MAP.

관능 평가 및 반응 표면 분석에 의한 삼백초와 둥굴레 가미 어성초 음료의 제조 조건 최적화 (Optimization of Preparation Conditions of Houttuynia cordata Beverage Containing Saururus chinensis and Polygonatum odoratum by Sensory Evaluation and Response Surface Methodology)

  • 성숙경;장경호;정경희;김애정
    • 동아시아식생활학회지
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    • 제18권6호
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    • pp.1072-1080
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    • 2008
  • The optimization of the addition ratios of Houttuynia cordata, Saururus chinensis, and Polygonatum odoratum var. pluriflorum hot water extract to Houttuynia cordata beverage was evaluated by applying response surface methodology. The quality characteristics of a selected best product were investigated. Sweet, savory, and fishy taste, and overall acceptability were optimized by response surface methodology using a central composite design. The concentration of effect of Houttuynia cordata, Saururus chinensis, and Polygonatum odoratum var. pluriflorum hot water extract was modeled using an equation. Hot water extracts of Houttuynia cordata ($1.75{\sim}1.89%$), Saururus chinensis ($1.03{\sim}1.04%$), and Polygonatum odoratum var. pluriflorum ($2.17{\sim}2.31%$) represented the optimal concentration conditions to obtain the best taste. The physical and chemical characteristics of the beverage manufactured at optimized conditions were pH 4.18, soluble solids 0.41 $^{\circ}Brix$, total acidity 0.21%, color value ($L^*$ value 40.08, $a^*$ value 4.53, and $b^*$ value 10.69), total polyphenol 54.63 mg/L, and electron donating ability 26.98%.

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두류와 밀 혼합 가루로 제조된 머핀의 품질 특성 (Quality characteristics of muffins made with legume and wheat flour blends)

  • 리 첸;이수진;정현정
    • 한국식품과학회지
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    • 제49권6호
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    • pp.638-643
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    • 2017
  • 본 연구에서는 머핀의 품질향상을 위해 두류-밀(1:1) 혼합가루로 제조한 머핀의 품질특성을 살펴보았다. 두류가루를 첨가하였을 때 밀가루만으로 제조한 대조군 머핀에 비해 명도가 감소하고 적색도가 증가하였다. 두류첨가 머핀은 대조군에 비해 상대적으로 많이 존재하는 식이섬유에 의해 높은 수분함량을 나타냈으며 조단백과 조회분의 함량도 대조군에 비해 높게 나타났다. 두류가루가 첨가된 머핀은 대조군에 비해 중량이 높았으나 높이와 부피가 감소하였고 기공의 분포도 다소 불규칙적으로 나타났다. 또한 두류가루 첨가로 인하여 머핀의 경도는 증가하였고 반대로 탄력성과 응집성이 유의적으로 감소하였다. 그러나 관능적으로 두류가루를 첨가한 머핀은 색에 대한 선호도가 대조군에 비해 높았으며 전체적인 기호도는 동부가루와 녹두가루로 제조된 머핀은 대조군에 비해 낮았으나 렌틸가루와 병아리콩가루로 제조한 머핀은 대조군과 유사한 결과를 보였다. 본 연구를 통해 두류가루를 밀가루의 50%까지 대체하여 제조한 머핀의 관능특성은 대조군과 거의 유사했고 영양성은 개선되었으며 이는 두류를 활용한 기능성 제빵 제품 개발의 기초자료로 활용될 수 있을 것으로 생각된다.

사회적 배려계층의 일상생활활동 불편도 분석 및 유니버설 디자인 설계요소 도출 (A Study on Perceived Discomforts of the Aged, the Disabled and the Pregnant and Universal Design Factors in Daily Activities)

  • 이동훈;김희진;김충식;정민근
    • 대한인간공학회지
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    • 제28권4호
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    • pp.35-49
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    • 2009
  • This study investigated perceived discomforts and those reasons of the young and middle-aged, the aged, the disabled and the pregnant in various daily activities, and elicited universal design factors based on human capacities (physical, sensory, cognitive and affective). A total of eighty people (twenty subjects for each user group) participated in one-to-one interviews about thirty six items of daily activities. A degree of discomfort of the daily activities was measured using Borg's CR10 scale. As a result, the disabled and the pregnant complained about almost all of the daily activities, and their degrees of discomforts were significantly higher than those of the youth and middle-aged and the aged. However, the youth and middle-aged and the aged only complained about some specific items. The major reasons of discomforts were related to physical and affective capabilities in general, where the detailed reasons of each user group were comparatively different. Finally, the universal design factors were elicited for each daily activity item based on the results of each user group. This study can be used to understand the discomforts and characteristics of the aged, the disabled and the pregnant in the various daily activities. The universal design factors elicited can also be applied to design related products and facilities universally.

분만 후 산모가 자각하는 피로 (Subjective Symptoms of Fatigue in Postpartum Women)

  • 김신정;정금희;김태희
    • 여성건강간호학회지
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    • 제6권3호
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    • pp.427-438
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    • 2000
  • The purpose of this study was to collect basic data the health care of postpartum women. Three hundred seventy five women who were 3 days postpartum were enrolled at two university hospitals. Data were collected from April 1999 to November, 1999 using a questionnaire titled 'Symptom Table on Fatigue Perception' designed by the Fatigue Research Committee of Japan. The collected data were scored by the use of mean and standard deviation according to the subjective symptoms of fatigue and each item was analyzed independent variable by the t-test and the ANOVA test. The results were as follows: 1. The average fatigue score of subjects was 1.61. Physical fatigue had the highest value with a mean of 1.82, followed by neuro-sensory fatigue with a mean score of 1.54, psychological fatigue was rated lowest with a mean of 1.45. 2. With the respect to the general characteristics of subjects, there were statistically significant differences in difficulty of labor (t=2.335. p=.020), sleeping time (t=2.340. p=.020) and desirability of pregnancy (t=2.409. p=.018).

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Analysis of the Gait Characteristics and Usability after Wearable Exoskeleton Robot Gait Training in Incomplete Spinal Cord Injury Patients with Industrial Accidents: A Preliminary Study

  • Bae, Young-Hyeon;Kim, Sung-Shin;Lee, Anna;Fong, Shirley S.M.
    • Physical Therapy Rehabilitation Science
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    • 제11권2호
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    • pp.235-244
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    • 2022
  • Objective: The aim of this study was to investigate of the foot plantar pressure and usability after gait training using the ExoAtlet wearable exoskeleton robot in an incomplete spinal cord injury (SCI) patient. Design: A case study Methods: Six participants with an asymmetry in motor and sensory function completed the gait training using ExoAtlet wearable exoskeleton robot for 15 sessions, five per weeks, 3weeks. They were divided into two groups (low and high strength group) and group differences were evaluated about session at stating of gait, gait distance at final session and foot plantar pressures and useability after training. Results: Low strength group was faster than high strength group on adaptation of robot gait. And high strength group increased faster than low strength group on the gait distance during training. In standing and gait, weaker leg was higher than stronger leg on mean foot plantar pressure in low strength group. And stronger leg was higher than weaker leg on foot plantar pressure in high strength group. The length of the anterior-posterior trajectory of the center of pressure during gait was similar in low strength group, but different in high strength group. useability was positive about ExoAtlet wearable exoskeleton gait after training. Conclusions: ExoAtlet wearable exoskeleton robot gait training was positive about improving gait in all participants regardless of differences in severity of symptoms and gait abnormalities.