• Title/Summary/Keyword: physiochemical characteristics

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Physiochemical Characteristics and Sensory Evaluation of Mulberry Fruit Beverages for Rural Food Process (산지가공 오디음료의 이화학적 특성 및 관능평가)

  • Yang, Hyang-Sook;Rho, Jeong-Ok
    • Journal of the East Asian Society of Dietary Life
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    • v.22 no.2
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    • pp.246-254
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    • 2012
  • The principal objectives of this study were to analyze the physiochemical properties of four mulberry fruit beverages (MFBs) and develop descriptive analysis procedures for evaluation of their sensory characteristics. Soluble solid, free sugar, pH, acidity, chromaticity, flavonoid, and anthocyanin of MFBs were determined. All MFB samples showed significantly different physicochemical properties ($p$<0.01). Ten highly trained panelists identified the following 11 sensory attributes in the MFBs and defined the terminology for each attribute : turbidity, chromaticity for appearance characteristics, berry, grass, fermented, sweet, astringent, and sour for flavor characteristics, and throat hit, refreshing, and astringent for textural characteristics. There were significant differences in the 10 sensory attributes among the MFB samples ($p$<0.001). In color, the value of MFB3 was significantly higher than those of others ($p$<0.05). In taste and overall acceptance, the values of MFB2 were significantly higher than those of others ($p$<0.01, $p$<0.001). Descriptive terminology of the developed MFBs could explain the sensory attributes of the samples according to this result. Based on this, proper analysis and sensory evaluation techniques could be applied to other fruit beverages to establish their physiochemical characteristic and descriptive sensory attributes.

The Physiochemical Characteristic and Descriptive Sensory Evaluation of the Blackberry Fruit Beverage (복분자 음료의 이화학적 특성 및 묘사적 관능평가)

  • Yang, Hyang-Sook;Rho, Jeong-Ok
    • Korean Journal of Human Ecology
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    • v.21 no.2
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    • pp.363-375
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    • 2012
  • The purpose of this study was to analyze the physiochemical properties of blackberry fruit beverage(BFB) and to develop a descriptive analysis procedure for evaluating the sensory characteristics of BFB. The amount of soluble solid, free sugar, pH, acidity, chromaticity, flavonoid, and anthocyanin of BFB were determined. All BFB samples demonstrated significantly different physicochemical properties(p<.01). Ten highly trained panelists identified the following eleven sensory attributes in the BFB and defined by standardized terminology for each attribute; turbidity, chromaticity for appearance characteristics, berry, grass, fermented, sweet, astringent, and sour for flavor characteristics, throat hit, refreshing, as well as astringent grade for textural characteristics. There were significant differences in all the eleven sensory attributes of the BFB samples(p<.001). Descriptive terminology used in the BFB analysis was capable of classifying the sensory attributes of the BFB. Based on these results, the analysis method and sensory evaluation techniques used in this study could be reasonably applied to other fruit beverages for establishing similar physiochemical characteristic and descriptive sensory attributes.

Physiochemical Characteristics and Antioxidant Activity of Soybean Curd Added with Saltwort (Salicornia herbacea L.) (함초를 첨가한 두부의 이화학적 특성 및 항산화성)

  • Shin, Mi Kyung;Kim, Myung Hee;Hong, Geum Ju
    • Korean journal of food and cookery science
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    • v.29 no.2
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    • pp.123-127
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    • 2013
  • In this study the physiochemical characteristics and antioxidant activity of soybean curd were prepared with saltwort (Salicornia herbacea L.). The moisture and protein of the saltwort soybean curd showed no difference among the samples. Ash and lipid were found to be the highest in the soybean curd to which 20% saltwort was added. The contents of mineral(Fe, K, Mg, Zn) were highest in the soybean curd to which 20% saltwort was added, and Ca content was high in the soybean curd to which 16% and 20% saltwort was added. DPPH (1,1-dipheny1-2-picryl-hydrazyl) radical scavenging activity is a method of measuring the antioxidant power of food; this was high in the soybean curd to which 20% saltwort was added. Adding more saltwort led to higher scavenging activity. From the above results, it could be seen that the soybean curd, which is made by adding saltwort, contributed to enhancing the functionality of antioxidant activation and product quality.

Physiochemical and Physical characteristics of juak with acaiberry(Euterpe oleracea Mart.) (아사이베리(Euterpe oleracea Mart.)를 첨가한 전통주악의 이화학적·물리적 품질특성)

  • Hwang, Su Young;Park, Geum Soon
    • Korean journal of food and cookery science
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    • v.29 no.6
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    • pp.653-660
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    • 2013
  • Acaiberry(Euterpe oleracea Mart.) was partially substituted from the formula for juak and the subsequent effects on the physiochemical and physical characteristics. And this study was carried out to standardize the recipe of acaiberry-juak. Acaiberry powder was added in 0(control), 1, 3 and 5% substitution ratios by weight per glutinous rice flour. Also, acaiberry puree was added in 3, 6 and 9% substitution ratios by weight water. The moisture contents showed juak with addition of acaiberry contents were lower then control. The diameter of the juak decreased with increasing levels of the added acaiberry powder and puree, whereas the height increased with increasing amount of the powder and puree. The Hunter colorimeteric L-values of the dough and acaiberry-juak decreased as the amount of acaiberry powder and puree increased. Hunter a and b-values both increased with increasing levels of the acaiberry powder and puree. Textural characteristics there were increase in hardness, springiness, chewiness as the amount of acaiberry powder and puree increased(p<.001). Cohesiveness were not significantly different as the level of acaiberry powder and puree increased(p<.001). The anti-oxidant capacity results, anthocyanin, DPPH radical scavenging activity, SOD-like activity, Nitrate-scavenging ability tended to increased by according to the addition acaiberry powder and puree(p<.001). As measured DSC, the onset temperature and enthalpy were accordingly increased during storage period as the acaiberry contents were higher then control. According to sensory evaluation results, the after swallowing, appearance, flavor, taste and texture of juak was acaiberry powder 1% and acaiberry puree 6% proper score is recorded. Overall acceptability of acaiberry juak powder 1%, puree 6% percent of the additives are also the highest mark in the sensory characteristics. Also aciberry powder addition of more than demonstrate a good reputation in the development juak will suggest more appropriate form of puree.

Investigation of Cooking Usage according to the Physiochemical and Textural Characteristics in Nabakkimchi with Different Radish Cultivars (무 품종별 나박김치의 이화학적 및 물성 특성에 따른 조리 적성 연구)

  • Lee, Si-Eun
    • Culinary science and hospitality research
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    • v.12 no.4 s.31
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    • pp.284-298
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    • 2006
  • This study aimed at defining radish cultivars to a best cooking usage based on their physiochemical and textural characteristics of Nabakkimchi. Baekkwang, Daeburyong, Chungwoon and Taebaek were used as four types of radish cultivars. Nabakkimchi was stored at $8^{\circ}C$ either after fermentation for 12 hours at $25^{\circ}C$(A group) or without preliminary fermentation(B group). As storage period went by, lightness was decreased. Haziness of liquid showed sudden increase at preliminary fermentation in group A, while it increased between the third day and fifth day in group B. Hardness of 'Fall season' type was relatively high after storage. pH was suddenly decreased on the second day in A group and on the fifth day in B group. Acidity was suddenly increased on the second day in A group and since the third day at B group. As a result of sensory evaluation, Chungwoon stored for 2 days after preliminary fermentation was the best variety.

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Effects of Low Temperature and Starvation on the Physicochemical Characteristics of Muscle of the Olive Flounder Paralichthys olivaceus (수온 및 절식에 따른 넙치(Paralichthys olivaceus) 근육의 물리화학적 특성 변화)

  • Shim, Kil Bo;Lee, So Jeong;Yoon, Ho Dong;Lim, Chi Won;Shin, Yun Kyung;Jeong, Min Hwan;Lee, Dong Gil;Park, Tae Il
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.5
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    • pp.430-437
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    • 2012
  • The effects of low temperature and starvation on the physiochemical characteristics of the muscle of the olive flounder Paralichthys olivaceus, were examined. Fish were deprived of feed for 28 days at 2, 4, 6, 8, 10, 12, and $20^{\circ}C$ in order to establish suitable conditions for live fish transportation. Throughout most of the 4 weeks of feed restriction, the physiochemical characteristics of the muscle of olive flounder were found to be dependent on the acclimation temperature. The breaking strength of muscle did not show a significant reduction during feed restriction at 2 and $4^{\circ}C$. With increasing temperatures, however, the breaking strength of muscle differed significantly according to the individual and feed restriction period (P<0.05). The moisture content in muscle acclimated at 10, 12, and $20^{\circ}C$ increased steadily over the feed-restriction period, while the crude lipid content decreased during the same period (P<0.05). At water temperatures above $2-8^{\circ}C$, no significant differences were shown during the same period. After it reached 6, 8, 10, 12, and $20^{\circ}C$, the muscle had an accumulation of lactate, and a loss of ATP. There was no change in the lactate or ATP content during the feed restriction period at 2 and $4^{\circ}C$, although there were differences among the water temperature groups. These results clearly show that temperature can have an important influence on the of muscle of physiochemical characteristics of muscle during live fish transportation.

Quality Characteristics of Kimchi with Added Houttuynia cordata (어성초를 첨가한 김치의 품질 특성)

  • Kwak, Hee-Jung;Jang, Jae-Seon;Kim, Soon-Mi
    • The Korean Journal of Food And Nutrition
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    • v.22 no.3
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    • pp.332-337
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    • 2009
  • This study was performed to investigate the physiochemical and sensory characteristics of Kimchi with added Houttuynia cordata Thunb(HC). According to measurements for physicochemical characteristics, the three groups of tested Kimchi(HC juice, HC powder, control) did not show any significant differences in pH and hardness. However, the acidity of the Kimchi with added HC juice was found to be significantly higher. Regarding lightness, L values were not different among the three groups, while a and b values showed significant decreases. In descriptive analysis, Kimchi redness was lowest in the HC juice group, and difference in redness was identified between the HC juice and powder groups. One survey indicated that the Kimchi with added HC juice had a unique odor, but no difference was found between the HC powder group and the control group. Also, a survey on preference characteristics indicated there were no differences between the three groups. For the saltiness and acidity of the Kimchi with added HC, there was a significant negative correlation(p<0.05), in which stronger saltiness lower acidity. On the other hand, acidity and HC odor showed a significantly positive correlation(p<0.05). Furthermore, the L value showed a significantly negative correlation(p<0.05) with HC odor.

Difference of Physiochemical Characteristics Between Citrus Bacterial Canker Pathotypes and Identification of Korean Isolates with Repetitive Sequence PCRs

  • Lee, Yong-Hoon;Lee, Seung-Don;Lee, Dong-Hee;Yu, Sang-Mi;Lee, Jung-Hee;Heu, Sung-Gi;Hyun, Jae-Wook;Ra, Dong-Soo;Park, Eun-Woo
    • The Plant Pathology Journal
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    • v.24 no.4
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    • pp.423-432
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    • 2008
  • The difference of carbon source utilization and fatty acid composition between the pathotypes of Xanthomonas strains, which causing citrus bacterial canker was compared, and the physiochemical characteristics were used to analyze relationship of the strains for the first time. The pattern of several carbon sources utilization and fatty acids composition reliably discriminated the pathotypes of Xanthomonas strains. The dendrogram which was constructed by 95 carbon source utilization profiles differentiated X. axonopodis pv. citri A, $A^*$ and $A^w$ from the other pathotypes. When the dendrogram was drawn by combined analysis of carbon source utilization pattern and fatty acid composition, X. axonopodis pv. aurantifolii B, C and X. axonopodis pv. citrumelo formed a distinct cluster. The difference of carbon source utilization and fatty acid composition could be used effectively for the identification of pathotypes of citrus bacterial canker. The physiochemical characteristics strongly indicated that the strains isolated in Korea belong to X. axonopodis pv. citri A type. The cluster analysis by the band patterns of ERIC-, BOX- and REP-PCR allowed the discrimination of the pathotypes isolated from Korea. However, the rep-PCRs could not differentiate X. axonopodis pv. citri A types from $A^*$ and $A^w$ types. The overall results of metabolic profiles and rep-PCRs strongly indicated that the Korean isolates are X. axonopodis pv. citri A type.

Evaluation of Meat Color and Physiochemical Characteristics in Forequarter Muscles of Holstein Steers

  • Moon, Sung Sil;Seong, Pil-Nam;Jeong, Jin Young
    • Food Science of Animal Resources
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    • v.35 no.5
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    • pp.646-652
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    • 2015
  • The beef forequarter muscle comprises approximately 52% of carcass weight. The objective of this study was to evaluate the physiochemical characteristics and meat color from forequarter muscle of Holstein steers. Fifteen forequarter muscles were trimmed of external connective tissue and fat. An experimental group of eight Holstein steers was assessed using meat color, water-holding capacity, drip loss, and Warner-Bratzler shear force value at the same quality grade. The M. omotransversarius (0.45 kg) had the highest (p<0.05) lightness (L*) value, whereas the M. teres major (0.4 kg) and M. triceps brachii (caput laterale) (0.52 kg) had the lowest (p<0.05) values. The M. semispanitus capitus (1.48 kg), which is a neck muscle, had the highest values for both redness (a*) and yellowness (b*), whereas the lowest (p<0.05) values were for the M. teres major. The M. omotransversarius, M. latissimus dorsi (1.68 kg), and M. rhomboideus (1.2 kg) were ranked high (p<0.05) in water-holding capacity. The drip loss value was the highest for the M. longissimus dorsi thoracis (p<0.05; 1.86 kg), while the M. infraspinatus (2.28 kg), M. supraspinatus (1.38 kg), M. brachiocephalicus (1.01 kg), and M. pectoralis superficialis (1.18 kg) had the lowest (p<0.05). The Warner-Bratzler shear force value indicated that the M. pectoralis profundus (3.39 kg), M. omotransversarius, and M. brachiocephalicus were the toughest (p<0.05), whereas the M. subscapularis (0.86 kg), M. longissimus dorsi thoracis, M. teres major, and M. infraspinatus were the most tender cuts (p<0.05). Here, muscle type explained most of the variability in the forequarter physiochemical characteristics. Thus, our findings suggest that these muscle profile data will allow for more informed decisions when selecting individual muscles to produce value-added products from Holstein steers.

Physiochemical Properties of Chicken Breast Sausage with Red Ginseng Marc Powder

  • Shin, Sun-Hwa;Choi, Won-Seok
    • Food Science of Animal Resources
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    • v.42 no.3
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    • pp.486-503
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    • 2022
  • This study explored the physiochemical and rheological properties of chicken breast sausages containing red ginseng marc (RGM) which contains useful components but is discarded. When compared to the control group, the use of RGM significantly increased the water holding capacity (WHC) as the particle size increased. As for the change in color value, addition of RGM resulted in an increase in a and b values; as the quantity was increased and particle size decreased, the a and b values increased significantly. The smaller the particle size of RGM, the greater was the radical scavenging activity. According to the results of the measurement of the viscoelasticity of chicken breast sausage containing RGM, the G' and G'' values increased with increasing amounts of RGM and particle size. Neither the addition of RGM nor its amount or particle size had any significant effect on gel formation temperature. The texture profile analysis (TPA) experiment examined the average TPA measurements of each sample under different measurement conditions, and no significant difference between the RGM and control groups were observed. In conclusion, when RGM is used in chicken breast sausages, the WHC, antioxidant capacity, and viscoelastic properties are affected. RGM can possibly be utilized in high value-added processed meat products if its quantity and particle size are altered based on product characteristics.