• 한국축산식품학회지
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• 제42권6호
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• pp.953-967
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• 2022

The objective of this study was to determine effects of aging methods (wet-aged, dry-aged, and packaged dry-aged) during 60 d on quality traits and microbial characteristics of beef. Wet-aged beef was packed by vacuum packaging and stored in a 4℃ refrigerator. Dry-aged beef was used without packaging. Packaged dry-aged beef was packaged in commercial bags. Dry-aged and packaged dry-aged samples were stored in a meat ager at 2℃-4℃ with 85%-90% relative humidity. Meat color, crust thickness, aging loss, cooking loss, Warner-Bratzler shear force (WBSF), texture profile analysis, Torrymeter, meat pH, water activity, volatile basic nitrogen (VBN), thiobarbituric acid reactant substances (TBARS), and microbial analysis were measured or performed every 15 d until 60 d of aging time. Meat color changed significantly with increasing aging time. Differences in meat color among aging methods were observed. Aging losses of dry-aged and packaged dry-aged samples were higher than those of wet-aged samples. Wet-aged beef showed higher cooking loss, but lower WBSF than dry-aged and packaged dry-aged beef. VBN and TBARS showed an increasing tendency with increasing aging time. Differences of VBN and TBARS among aging methods were found. Regarding microbial analysis, counts of yeasts and molds were different among aging methods at the initial aging time. Packaged dry-aged and dry-aged beef showed similar values or tendency. Significant changes occurred during aging in all aging methods. Packaged dry aging and dry aging could result in similar quality traits and microbial characteristics of beef.

• Animal Bioscience
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• 제34권9호
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• pp.1425-1438
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• 2021

Maintaining a high level of beef consumption requires paying attention not only to quantitative traits but also to the quality and dietary properties of meat. Growing consumer demands do not leave producers many options for how animals are selected for breeding and animal keeping. Meat and carcass fatness quality traits, which are influenced by multiple genes, are economically important in beef cattle breeding programs. The recent availability of genome sequencing methods and many previously identified molecular markers offer new opportunities for animal breeding, including the use of molecular information in selection programs. Many gene polymorphisms have thus far been analyzed and evaluated as potential candidates for molecular markers of meat quality traits. Knowledge of these markers can be further applied to breeding programs through marker-assisted selection. In this literature review, we discuss the most promising and well-described candidates and their associations with selected beef production traits.

• Journal of Animal Science and Technology
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• 제58권5호
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• pp.20.1-20.11
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• 2016

The present review has mainly focused on the specific parameters including aging (aging days, temperature, relative humidity, and air flow), eating quality (flavor, tenderness and juiciness), microbiological quality and economic (shrinkage, retail yields and cost) involved beef dry aging process. Dry aging is the process where beef carcasses or primal cuts are hanged and aged for 28 to 55 d under controlling environment conditions in a refrigerated room with $0^{\circ}$ to $4^{\circ}C$ and with relative humidity of 75 to 80 %. However there are various opinions on dry aging procedures and purveyors of such products are passionate about their programs. Recently, there has been an increased interest in dry aging process by a wider array of purveyors and retailers in the many countries. Dry aging process is very costly because of high aging shrinkage (6 to 15 %), trims loss (3 to 24 %), risk of contamination and the requirement of highest grades meat with. The packaging in highly moisture-permeable bag may positively impact on safety, quality and shelf stability of dry aged beef. The key effect of dry aging is the concentration of the flavor that can only be described as "dry-aged beef". But the contribution of flavor compounds of proteolysis and lipolysis to the cooked dry aged beef flavor is not fully known. Also there are limited scientific studies of aging parameters on the quality and palatability of dry aged beef.

• 생명과학회지
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• 제18권11호
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• pp.1538-1542
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• 2008

본 연구는 와인숙성이 우육포의 품질특성에 미치는 영향을 규명하기 위하여 제조과정에 물 50 ml를 첨가한 육포(T0), 물 25 ml와 와인 25 ml를 첨가한 육포 그리고 와인 50 ml를 첨가 한 육포 등 세 종류의 육포를 제조하였다. 수분, 조단백질, 조지방 및 조회분 함량은 시료들 사이에 유의한 차이가 없었다. 육포의 명도($L^*$), 적색도($a^*$) 및 황색도($b^*$)는 시료들 사이에 유의한 차이가 없었다. 기계적 물성으로 측정한 경도, 탄성, 응집성, 뭉침성 및 씹힘성은 와인숙성이 영향을 미치지 않았다. 수분활성도, pH 및 TBARS값은 시료들 사이에 유의성이 없었지만 VBN함량과 총 균수는 T2가 가장 낮았다(p<0.05). 기호도 조사에서 풍미는 T2가 T0보다 유의하게 우수하였으나 (p<0.05) 맛, 색깔, 연도, 다즙성 및 전체적인 기호성은 시료들 사이에 유의한 차이가 없었다.

• 한국축산식품학회지
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• 제34권6호
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• pp.784-791
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• 2014

The aim of this study was to ascertain the effects of beef on the quality characteristics, such as color, texture profile, water absorption ratio, volume, turbidity, and sensory evaluation, of noodle products. Various types of beef were added to the flour at a mixture ratio of ground beef (BG) 10, 15, 20, 25%; concentrated beef (BC) 9, 11, 13, 15%; and powdered beef (BP) 1, 3, 5, 7%. Each treatment was analyzed and compared with a 100% flour noodle as a control. With increasing BG, BC, and BP ratios, the L and b values for color decreased, while the a value increased, from that in the control. The hardness of the noodles treated with BG increased with increasing mixture ratios, but hardness decreased in the BC and BP treatments with increasing mixture ratios (p<0.05). The noodles with the largest beef composition in the mixtures of each treatment exhibited the highest turbidity scores, which was believed to be because the solid contents would be transferred to the soup during heating. In the sensory evaluation of cooked noodles, the BG 10%, BC 9%, and BP 1% treatments exhibited the best color. In an overall preference test, 20% of BG and 3% of BP could be added to the noodles. The best palatability was exhibited by the BG 10%, BC 13%, and BP 3% treatments.

• 한국조리학회지
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• 제17권3호
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• pp.89-103
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• 2011

본 연구의 목적은 쇠고기 원산지 이미지가 소비자 품질지각, 태도 및 구매 의도의 효과를 조사하는 것이다. 실증 분석 대상자는 서울 지역 소재인 쇠고기를 구매한 경험이 있는 일반인을 대상으로 2010년 12월 27일부터 2011년 1월 10일까지 15일 동안 300부를 배포하여 불성실한 설문 56부를 제외한 244부를 분석 자료로 사용 하였다. 첫째, 쇠고기 원산지 이미지는 소비자들의 품질지각, 태도 및 구매 의도에 유의한 영향 관계를 가진다. 둘째, 소비자들의 품질지각은 소비자 태도 구매의도에 정의 영향 관계를 가진다. 셋째, 소비자의 태도는 구매 의도에 정의 영향 관계를 가진다. 따라서 본 연구의 결과, 쇠고기 원산지에 대한 국가 이미지가 소비자 품질지각, 태도 및 구매의도 모두 유의한 영향 관계가 있는 것으로 판단되며, 아래와 같이 시사점을 제시하고자 한다. 본 연구에서는 쇠고기의 원산지 이미지를 향상시키기 위해서 쇠고기를 친환경적으로 사육하고, 정기적인 검진 통을 통하여 위생적이고 안정적인 제품 생산을 하고 이에 적극적인 홍보 활동을 강화함으로써 쇠고기 이미지를 증대 시킬 수 있는 방안을 마련해야 할 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제14권2호
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• pp.263-267
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• 2001

Beef samples of loin eye area from New Zealand, USA and three quality grades of Hanwoo were analyzed using near infrared spectrophotometer with reference values from laboratory optical Chromameter to determine effective spectrum range and mathematical treatment for determination of color values. $R^2s$ of prediction models were not improved much by calibrating with whole light range (400~2500 nm) compared to using visible range (400~1100 nm). Standard errors of calibration and prediction were influenced by possible bias due to sampling non-homogeneous sample sources. However, partial differentiation in the first order was more stable against sampling biases than second derivatives of the spectra. Lightness value was little different among the five sample sources of beef. Beef samples from USA were brighter and more reddish than beefs of Hanwoo or from New Zealand (p<0.05). Yellowness of USA beef was the highest followed by beef from New Zealand, which was also higher than Hanwoo beefs of three quality grades (p<0.05).

• 농업과학연구
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• 제45권2호
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• pp.211-218
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• 2018

Different packaging methods and storage temperatures were tested to determine the storage stability of beef dry-aged for 21 days based on microbial, physicochemical, and sensory qualities. After completion of the dry aging, the dried surface of beef sirloin was trimmed off, and the beef was packaged using two different methods (oxygen-permeable wrap or vacuum packaging) and stored at different temperatures ($3{\pm}2^{\circ}C$ or $-23{\pm}2^{\circ}C$) for 0, 7, 14, or 21 days. Lipid oxidation and the sensory quality of the dry-aged beef were not affected by the packaging method and storage temperature during storage. No microbial growth was observed over the storage period in the vacuum-packaged dry-aged beef, regardless of the storage temperature. However, dry-aged beef in the oxygen-permeable wrap packaging showed microbial spoilage with 8.82 log CFU / g at day 7 of the refrigerated storage. The vacuum-packaged dry-aged beef showed the lowest values (p < 0.05) in $a^*$ and chroma at days 14 and 21 at $3^{\circ}C$, and days 7 and 14 at $-23^{\circ}C$, respectively. Therefore, it is recommended that dry-aged beef with wrap packaging stored in refrigerated conditions should be consumed as quickly as possible due to microbial growth. For long-term storage, dry-aged beef should be frozen because freezing can extend the color stability up to day 21 of storage without adverse effects on the hygienic or meat quality aspects of dry-aged beef.

• 한국축산식품학회지
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• 제30권4호
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• pp.669-673
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• 2010

The purpose of this study was to evaluate kiwifruit as a tenderizer by its effects in improving the quality of various beef parts. Basic data are provided for development of standard recipes for convenient cooking in foodservice. The optimum temperature of the crude proteolytic enzymes in the kiwifruit was determined to be $65^{\circ}C$. The substrate specificity of the enzymes was higher in beef than in pork, chicken, or duck. The enzymes had their greatest effects on chuck and rib parts, and had lower effects on loin, breast, and round parts, in that order. As the amount of kiwifruit extract increased, the moisture content of the cooked beef also increased. The addition of 10% kiwifruit improved the sensory quality of the cooked beef. In particular, the texture scores of cooked beef samples treated with 10% and 15% kiwifruit extract were significantly higher than the other samples (p<0.001), and juiciness and overall acceptability scores were also highest. In summary, 10% kiwifruit extract is deemed an appropriate addition to improve.

• 한국식품영양학회지
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• 제20권1호
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• pp.96-101
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• 2007

서울과 수도권에 거주하는 주부 150명을 대상으로 소고기 소비와 한우육에 대한 의견을 설문지를 통하여 조사하였다. 한우 고기를 선택한 이유는 맛/품질(56.5%)과 위생/안전(27.8%)으로 나타났으며, 한우 구입 장소는 정육점(42.3%), 백화점, 할인마트, 대형마트(28.1), 농협, 축협(19.9%)순으로 나타났다. 한우육의 구매 가격은 약 20,944원으로 1회 구입량은 1.4근으로 구입하고, 한우의 가격은 61.7% 소비자들이 ‘비싸다’라고 대답하였다. 한편, 수입육을 선택하는 이유는 가격이 ‘싸다’라고 78.0%가 응답하였으며, 구입은 할인점, 백화점(39.4%), 정육점(31.1%)순이었다. 한우 브랜드육에 관한 조사에서는 73.3%가 브랜드육을 들어본 적이 있는 것으로 응답하였으나 브랜드육을 구입한 적은 48%에 불과한 것으로 나타났다. 브랜드 구매하는 이유는 맛(40.0%), 위생(25.2%)으로 일반한우에 비하여 맛과 품질이 매우 좋거나 좋은 것은 51.1%로 '비슷하다'(22.4%) 또는 '잘 모르겠다'(29.9%)라고 응답하여 한우 브랜드육에 대한신뢰가 아직은 높지 않은 것을 볼 수 있었다. 한우 브랜드육의 구입할 때 품질/맛(54.9%),위생/안전성(38.9%)을 중요하는 요건으로 꼽았으며, 가격은 일반한우보다 약 18% 차이가 나더라도 구입하겠다는 것으로 나타났다. 모든 농산물의 수입화가 빠르게 진행되어져 가는 지금의 실태에서 우리나라 소비자에게 있어서 한우육에 대한 인식이 매우 좋고 구매가 선호되는 대상이라는 점은 무척 고무적인일이라 할 것이다. 그러나 이러한 신토불이에 의거한 한우육 선호 인식만을 토대로 브랜드육이 특별한 노력을 기울이지않는다면 브랜드육의 시장은 반드시 밝다고만은 할 수 없는 실정이다. 그러므로 브랜드육은 소비자의 요구에 발맞추어 향후의 방향을 진행하여 나아가야만 할 것이다.