• Title/Summary/Keyword: physical and sensory evaluation

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Physical and Sensory Evaluation of Tenebrio molitor Larvae Cooked by Various Cooking Methods (조리방법별 갈색거저리 유충의 물리적 및 관능적 특성)

  • Baek, Minhee;Yoon, Young-Il;Kim, Mi Ae;Hwang, Jae-Sam;Goo, Tae-Won;Yun, Eun-Young
    • Korean journal of food and cookery science
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    • v.31 no.5
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    • pp.534-543
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    • 2015
  • Recently, the Tenebrio molitor larva was recognized as a novel food ingredient by the Ministry of Food and Drug Safety in Korea. Accordingly, we investigated its physical and sensory characteristics to establish the cooking conditions that may increase the demand of T. molitor larvae as a food. In this study, T. molitor larvae were cooked by various methods such as hot air dry, oven-broil, roast, pan fry, deep fry, boil, steam, and by microwave. In the physical evaluation of texture, the hardness and fracturability values were highest when larvae were cooked in the microwave. The adhesiveness, springiness, and chewiness values were highest when larvae were boiled. Boiled and steamed larvae had the highest lightness (L value), while oven-broiled larvae had the highest redness (a value) and yellowness (b value) values. Sensory evaluations assessed the appearance, aroma, flavor, and texture of cooked T. molitor larvae. Steamed and boiled larvae sizes were significantly large and the form was well preserved similar to fresh larvae. The moisture heat cooked (steamed and boiled) T. molitor larvae had the aroma and flavor of steamed corn, canned pupa, and boiled mushroom. In case of oven-broiled T. molitor larvae, the aroma and flavor of mealworm oil, seafood, sweet and roasted sesame were higher than in those cooked by other methods. In texture among sensory evaluation, the hardness and crispiness were the highest in the hot air dried and oven-broiled larvae, whereas juiciness was significantly higher in the boiled and steamed. Accordingly, we suggest that oven-broiled T. molitor larva will be prefered by consumer, due to its the rich aroma and flavor.

Influence of Processing on Quality of Carrot Juice (가공공정에 의한 당근쥬스의 품질변화에 관한 연구)

  • Kimjun, Hye-Young;Gerber, Leonard E.
    • Korean Journal of Food Science and Technology
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    • v.20 no.5
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    • pp.683-690
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    • 1988
  • This study was conducted to determine the organoleptic and physical properties and carotenoid of commercial canned, frozen and freshly-made carrot juice. Samples were evaluated by sensory panel and measured for viscosity and acidity. For carotene analysis, HPLC of alpha- and beta-carotene, and spectrophotometry of total carotenoid content were used. Sensory evaluation indicated that the canned sample was less acceptable, especially for flavor and texture, than other juices, while forzen juice was considered as acceptable as freshly-made carrot juice. The canned product showed about 10 times higher viscosity and lower acidity than others. Between two kinds of frozen samples, one sample was the same as freshly-made sample for all parameters while the other showed less alpha-carotene content which was 2 times higher than that of canned one. Canned sample contained 70-77% of freshly-made or frozen samples in total carotenoid and beta-carotene content and 24% of freshly-made one in alpha-carotene. These results suggest that freezing process is a good preservation method for carrot juice with respect to sensory evaluation, physical property and carotenoid content.

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The Physical Properties of Rice and Color Rice-Added Cakes (백미, 흑미 첨가 케이크의 물리적 특성)

  • 장정옥;류화정
    • Journal of the East Asian Society of Dietary Life
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    • v.8 no.1
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    • pp.51-56
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    • 1998
  • In this research, we added 10%, 20% and 30% of white rice powder and colored rice powder to wheat flour, then baked cakes to appraise the quality of each cake by physical and sensory evaluation The resultsare as follows: 1) The specific gravity was increased in order of rice powder-added batters and colored rice powder-added batters. No remarkable difference was found in expansion ratio of cakes except some reduction in 30% rice powder-added cake. 2) Gumminess of cake was higher in the 30% colored rice-added cake Hardness of rice-added cakes was higher than colored rice-added ones. More adding rate of rice, higher hardness of cake. No remarkable difference was found in chewiness, springiness and cohesiveness of cakes 3) In case of color, rice-added cakes showed more L value and less b value than colored rice-added ones. Colored rice-added cakes showed less L value more a value and less b value as adding rate became higher 4) According to the results of sensory evaluation, no remarkable difference was found in the size of a cell and distribution of cells. Crumb and tenderness tended to be lower in rice added cakes than in colored rice added ones. Color was prefered in 30% colored rice added cakes over rice-added cakes and less added colored rice added cakes.

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A Basic Study of Muan Onion Kimchi with Herb (무안양파김치 개발을 위한 기초연구)

  • Jung, Hae-Ok;Oh, Suk-Tae;Jung, Dong-Ok
    • Culinary science and hospitality research
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    • v.7 no.1
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    • pp.107-118
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    • 2001
  • In this study, physical properties and color were measured and sensory evaluation was conducted on the onion kimchi with herb. Onion was produced during the winter season at Muan area. It means that water content of the onion was least of all the seasons. Onion kimchi was made with various herbs and various amounts of herb was added to the onion kimchi for the selected herb. Sensory evaluation indicated that Rosemary was best of all the tested herbs. Adequate amounts of Rosemary was 1 and 2%, while 5% was not evaluated as good.

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Quality Evaluation of Raw Fruits and Vegetables (과실(果實) 및 채소(菜蔬)의 식품평가(品質評價))

  • Lee, Mie-Soon;Kim, Gun-Hee
    • Journal of Nutrition and Health
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    • v.17 no.2
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    • pp.108-112
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    • 1984
  • Quality characteristics of fruits and vegetables were investigated by physical, chemical and sensory evaluations. Firmness of tomato fruits tended to be reduced as their maturity or ripeness stage progressed. Sensory evaluation revealed that raw tomatoes were the most acceptable at pink or light red stage. Specific gravity was highly correlated with mealiness. Emphasis was placed on the basic study forming the foundation of national quality standards of raw fruits and vegetables.

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Effect of Neuro-Feedback Training and Transcutaneous Electrical Nerve Stimulation (TENS) in Stress, Quantitative Sensory Threshold, Pain on Tension Type Headache

  • Lee, Young-Sin;Lee, Dong-Jin;Han, Sang-Wan;Kim, Kyeong-Tae
    • The Journal of Korean Physical Therapy
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    • v.26 no.6
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    • pp.442-448
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    • 2014
  • Purpose: The objective of this study is to evaluate the effect of neuro-feedback training and transcutaneous electrical nerve stimulation (TENS) on stress, quantitative sensory threshold and pain in patients suffering from tension type headache. Methods: 22 participants who passed the preliminary evaluation were enrolled in the study and 11 participants were randomly assigned to each group. The control group (n=11) was subject to the TENS treatment of which was composed of a 20-minute session for 5 times a week during 4 weeks, and the experimental group (n=11) was subject to both neuro feedback training and TENS treatment for 10 minutes a day and 5 days a week during 4 weeks. The Perceived Stress Scale (PSS) was used to measure a level of stress and the quantitative sensory testing (QST) was used for the measurement of cold pain threshold (CPT) and heat pain threshold (HPT); A degree of pain was evaluated through the headache impact test-6 (HIT-6). Results: In comparision of all dependent variables between the control and subject groups, there were significant differences in stress, quantitative sensory threshold and pain after the treatment (p<0.05), and the experimental group showed significant differences in stress, CPT, HPT and pain (p<0.05) and the control group showed only a significant difference in HPT (p<0.05). Conclusion: Findings of this study demonstrate that the concomitant administration of the TENS treatment and neuro feedback training is effective on alleviation of stress, quantitative sensory threshold and pain in patients with tension type headache.

Effects of marbling on physical and sensory characteristics of ribeye steaks from four different cattle breeds

  • Shahrai, Nurul Nuraliya;Babji, Abdul Salam;Maskat, Mohamad Yusof;Razali, Ahmad Faisal;Yusop, Salma Mohamad
    • Animal Bioscience
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    • v.34 no.5
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    • pp.904-913
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    • 2021
  • Objective: Marbling or intramuscular fat (IMF) has been widely reported to directly impact the sensory acceptance of meat. This study was carried out to determine the physical and sensory characteristics of ribeye, Longissimus dorsi steaks obtained from four different cattle breeds namely Wagyu, Angus, Brahman, and Malaysian local beef, the Kedah-Kelantan (KK). Methods: The degree of marbling was determined by using an established combined camera-image analysis technique while instrumental texture determination was carried out by using Warner-Bratzler shear force analysis. Sensory evaluation of the beef steaks was performed following a quantitative descriptive analysis incorporating 10 trained consumer panelists. Results: Wagyu was found to possess the highest (p<0.05) percentage of IMF at 33.90% and the lowest shear force (raw = 5.61 N/㎟; cooked = 14.72 N/㎟) followed by Angus (20.87%), Brahman (12.17%), and KK (p<0.05, 6.86%). The difference in sensory properties of the four steaks was evident, with Wagyu appearing to be highly correlated with most sensory attributes measured namely sustained buttery, tooth-packing, chewiness, juiciness, tenderness, mouthfeel, oiliness, and overall acceptability. The Malaysian local beef, KK was found to be less acceptable (p<0.05), although most of its sensory attributes were found similar (p>0.05) in appearance, aroma, texture, juiciness, and flavour to the cooked steak from Angus and Brahman. Conclusion: This present study demonstrated the role of IMF in determining the quality and sensory acceptance of beef from different cattle breeds. These data have provided new information and further understanding on the physical and sensory quality of Malaysian local beef.

Effects of Adding Silkworm Powder on the Quality of Seolgiddeok (누에분말을 첨가한 누에설기의 일반성분 및 품질 특성)

  • 임영희;김미원;김애정;김명희
    • Korean journal of food and cookery science
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    • v.18 no.6
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    • pp.562-566
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    • 2002
  • Seolgiddeok a representative rice cake was prepared by the addition of silkworm powder(SP) at various concentrations, and their physical characteristics were monitored by sensory evaluation, chromaticity, and rheometric measurement. In the proximate composition of SP cake, the contents of crude protein and ash were increased as the ratio of SP increased, but the moisture content was decreased. In the sensory evaluation, 3%-SP cake showed the highest preference, old showed the highest values in color, flavor, taste. texture, and overall duality. Lightness(L) value of SP cake was decreased as the ratio of SP increased. In the rheometer test, 15%-SP cake showed the highest value in the hardness, but 3%-SP cake showed the highest value in cohesiveness, gumminess and brittleness.

A Study on Basie Maternity Skirt (임신부의 체형변화에 따른 기본스커트 연구)

  • Kwak Hye-Jin;Rim Won-Ja
    • Journal of the Korean Society of Clothing and Textiles
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    • v.12 no.2 s.27
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    • pp.145-158
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    • 1988
  • The purpose of this study was develop a skirt pattern drafting method for pregnant women on the basis of their physical characteristics. The study procedures and results were as follows; 1. One hundred and one women who were 7,8 or 9 months pregnant were measured on 29 items. The result was computed to obtain descriptive statistics and correlation coefficients between each items. 2. Two new skirt patterns were developed based on the data analysis. 3. The sensory evaluation was applied to evaluate the new patterns for pregnant women by comparing them with the Japanese MOONHWA method skirt pattern for pregnant women. Sensory evaluation for appearance: According to the result of Mann-Whitney test among the three skills the skirt A was most satisfactory, and the next was the skirt B followed by Japanese MOONHWA method Skirt. Sensory evaluation for comfort; The result of Mann-Whitney test showed that the skirt B was comfortable, and the next was the shirt A followed by Japanese MOONHWA method skirt.

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Quality Characteristics of Starch Oddi Dasik Added with Mulberry Fruit Juice (오디즙을 첨가한 녹말오디다식의 품질특성에 관한 연구)

  • Lee, Jung-Hee;Woo, Koung-Ja;Choi, Won-Seok;Kim, Ae-Jung;Kim, Mi-Won
    • Korean journal of food and cookery science
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    • v.21 no.5
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    • pp.629-636
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    • 2005
  • This study was carried out to investigate of the quality characteristics of the starch Oddi Dasik(MSOD) manufactured with various addition levels (0, 5, 10, 18 and 28%) of mulberry fruit (Oddi) juice (MFJ), with various levels(55%, 50%, 45%, 37% and 27%) of sucrose syrup, and with the ratio of rice powder: mungbean starch (1:4) according to the traditional Korean Dasik (a kinds of cookie) methodology. The nutritional components of Oddi and MSOD were examined, and sensory evaluation and physical tests of MSOD added MFJ were conducted. The results are summarized as follows. In Oddi, the contents of moisture, crude fat, crude protein, crude ash, and vitamin C, and the levels of acidity, pH and sugar were 88.45%, 0.245%, 2.23%, 0.88%, 53.20 mg%, 8.00%, 4.41 and 11.0 Brix%, respectively. In MSOD (Oddi 10%), the contents of moisture, crude fat, crude protein, and crude ash, were 22.8%, 0.117%, 9.2% and 0.8%, respectively, and were all increased with increasing MFJ amount. In MSOD (Oddi 10%), the contents of Ca, Mg, K and Fe were 63.2 mg%, 70.9 mg%, 376.0 mg% and 7.7 mg%, respectively. and were increased with increasing MFJ amount. For the establishment of the additional amount of MFJ, sensory evaluation and physical tests were conducted. From the total characteristics of sensory evaluation, the MSOD with 10% MFJ was judged as the best. Color L and b values of MSOD significantly decreased and a value increased with increasing MFJ percentage. Hardness, gumminess, adhesiveness and chewiness among the texture characteristics of MSOD were significantly increased with increasing MFJ amount. However, there were no significant differences in springiness and cohesiveness of the MSOD. In conclusion, the optimal added amount of MFJ for the manufacture of the MSOD was proposed to be 10% of the total weight.