• 대한영양사협회학술지
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• 제23권2호
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• pp.129-142
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• 2017

The purpose of this study was to compare the usage of beef and foodservice managers' perceptions of beef quality by foodservice type. A survey was conducted on 546 dietitians, and 499 acceptable responses were used for data analysis. By weight, pork was the most used meat in foodservice institutions, followed by poultry and beef. More than half of the foodservices selected meat suppliers by competitive bidding. Approximately 85.8% of the respondents used Hanwoo beef, followed by Australian beef and Youku beef. Beef type differed significantly by foodservice type (P<0.001): most of the schools and social welfare facilities used Hanwoo beef, whereas most hospitals and business/industry operations used Australian beef. When purchasing beef, safety of beef was rated the most important, while eco-friendliness was rated the least important. Most of the dietitians understood that marbling is one of the determinants of the beef quality, but were not aware of other components. Dietitians that selected Hanwoo and Youku beef were more satisfied with quality, taste, nutrition, freshness, country of origin, package, customer, preference, and availability for various menus than those who used imported beef. Dietitians who used Hanwoo beef were the most satisfied with country of origin, whereas the others were the most satisfied with safety. Since the dietitians are in charge of planning menus and selecting meat suppliers at foodservice institutions, they should make knowledgeable decisions by understanding meat supply systems and quality of beef.

• 한국조리학회지
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• 제15권3호
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• pp.112-127
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• 2009

2007년 현재 한 미 FTA 협상 결과에 따라 미국산 수입 쇠고기의 개방이 본격화되면서 국내 외식시장의 변화가 예상되고 있다. 이에 국내 외식시장은 '쇠고기 원산지 표시제의 정착'과 '국내산 한우와 수입 쇠고기에 대한 소비자 니즈의 충족'이라는 당면과제를 안고 있다. 이와 같이 조사 분석된 연구 결과를 요약하면 다음과 같다. 첫째, 일반음식점의 쇠고기 원산지 표시에 대한 소비자 인식 수준은 비교적 낮은 것으로 나타났다. 둘째, 수입 쇠고기를 선호하는 이유는 한우에 비해 맛은 떨어지지만 가격이 상대적으로 저렴하기 때문인 것으로 나타났으며, 일반음식점에서 판매하는 국내산 한우에 대한 불신감이 큰 것으로 분석되었다. 셋째, 국내산 한우는 맛의 우수성, 안전성, 신선도에서 높은 평가를 받고 있는 반면, 수입 쇠고기는 모든 속성에서 보통 수준 이하의 낮은 평가를 받고 있었다. 이와 같은 조사 결과를 토대로 판단해 볼 때, 쇠고기의 원산지 표시제에 대한 일반음식점의 올바른 인식과 원산지 표시제도의 정착을 통해 소비자들이 믿고 먹을 수 있는 외식 환경이 조성되어야 하며, 국내산 한우와 수입 쇠고기에 대한 소비자 니즈를 충족시키기 위한 노력이 있어야 할 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제20권8호
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• pp.1278-1284
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• 2007

Changes in the concentrations of biogenic amines (BAs) in fresh beef, pork, and chicken breast and leg were investigated during storage, and the relationship between the content of volatile basic nitrogen (VBN) and BAs was evaluated. As the storage period increased, the levels of putrescine (PUT), cadaverine (CAD) and tyramine (TYM) increased in all the meat samples, except for TYM in beef (p<0.001). The level of BAs in beef, pork and chicken changed but the extent of these changes was different among the kinds of BAs and meats. Measurement of the VBN content was confirmed as a good index for interpreting the specific BAs content in general, such as PUT, CAD, and TYM, as well as evaluating a meat's freshness during storage. However, the kinds of BAs which can be predicted from the VBN content varied in different meats (p<0.05).

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2003년도 동계 학술대회 논문집
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• pp.185-191
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• 2003

냉장육은 냉동육에 비해 온도관리를 통해 육질이 부드럽고, 맛이 좋다는 이유로 냉장육의 소비가 증가하고 있다 그러나, 냉장육은 냉동육에 비해 저장온도가 높아 유통 및 저장시 미생물 성장에 적합한 환경이다. 미생물의 일부는 직접적 또는 간접적으로 그들이 생성하는 독소를 통하여 식중독을 일으킬 뿐만 아니라, 이러한 미생물 성장으로 인한 단백질의 분해와 미생물의 대사작용은 육류의 부패 원인이 되고 있다. (중략)

• 한국축산식품학회지
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• 제39권2호
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• pp.266-275
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• 2019

Although the production of dry-aged beef has been increasing, most purveyors are unaware of the changes in quality that ensue after completion of the aging period and do not adhere to specific guidelines for its packaging and storage. The objective of this study was to investigate the storage stability of vacuum-packaged dry-aged beef based on changes in microbial, physicochemical, and sensory properties during refrigeration at $4^{\circ}C$ for 21 d. The total aerobic bacterial count exceeded 6 Log CFU/g at approximately day 11 and significantly increased after day 14. Freshness indicators such as pH and volatile basic nitrogen content were acceptable until day 14 and 21, respectively. Based on the evaluation of overall sensory acceptability, the dry-aged beef was acceptable until 14 d without any sensory deterioration. Therefore, vacuum-packaged dry-aged beef could be stored for 11 d at $4^{\circ}C$ without any adverse effect on its microbial and sensory quality.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1259-1259
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• 2001

Meat becomes brown and rancid during storage in the refrigerator and display in the case. Color changes, metmyoglobin formation and lipid oxidation are the important problems in the transportation / distribution of meat and retail display. The freshness of meat is determined by the sense of vision and smell. Since conventional method determining lipid oxidation is time consuming and destructive (it needs to homogenize meat with reagents, filtrate, time for reaction and read optical density using spectroscopy), more rapid and nondestructive technical tools are desired. The objective of this work was to evaluate near-infrared spectroscopy as an analytical tool for determining meat color, metmyoglobin formation and lipid oxidation. in beef, pork and chicken. Semitendinosus and longissimus thoracis muscles from six beef steers, biceps femoris and longissimus thoracis muscles from twelve LWD crossbred pigs, and superficial pectoral muscles from twenty-four broilers were used. About a 5-cm diameter and 1-cm thick sample (20.0g) was cut from the muscle and placed on plastic foam, over-wrapped with PVC film, and displayed under flourescent lights at 4 degrees C. during 10 days for beef and pork or 4 days for chicken. The spectra was measured by NIR systems Model 5500 Spectrophotometer using fiber optic scan at range of 400 - 1100 nm. Data were recorded at 2 nm intervals and 10 scans / 10 sec were averaged for every sample. Data obtained were saved as log 1/Re, where Re is the reflectance energy, and then mathematically transformed to second derivatives to reduce effects of differences in particle size. $L^{*}$, $a^{*}$ and $b^{*}$, and metmyoglobin formation were determined by conventional spectrophotometer using the integrating sphere unit. 2-Thiobarbituric acid reactive substances (TBARS) were measured for lipid oxidation. A multiple linear regression was used to find the equation which would best fit the data. The number of wavelengths used in the equation was selected based on the fewer number compared to the increasing multiple correlation and Decreasing standard error. (omitted)

• 동아시아식생활학회지
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• 제22권2호
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• pp.290-297
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• 2012

쑥을 급여하지 않은 한우육(T0구)과 쑥을 급여한 한우육(T1구)을 $-20^{\circ}C$에서 12개월간 동결한 후 해동하여 일반성분, 무기질, 아미노산 및 지방산 조성을 분석하였다. 한편, 해동 후 냉장에 의한 물리 화학적 및 기호적 특성 변화를 비교하여 쑥의 급여 효과를 검토하였다. 동결 한우육의 일반성분은 T0구와 T1구간의 유의적 차이가 없었다. 무기질에서 Ca, P, K, Mg 및 Zn의 함량은 처리구간의 유의적 차이를 보이지 않았으며, Na은 T0구, Fe는 T1구에서 유의적으로 많게 분석되었다. 아미노산 총량은 처리구간의 유의적 차이가 없었으나, leucine은 T0구가 많은 반면 glycine, cysteine, histidine 및 arginine은 T1구가 유의적으로 많게 분석되었다. 지방산에서 stearic acid는 T0구가 많은 반면, palmitoleic acid, oleic acid 및 불포화지방산 함량은 T1구가 유의적으로 많았다. 경도는 쑥의 급여에 관계없이 해동 후 냉장에 의해 낮아져서 연도가 향상됨을 알 수 있었다. 동결 한우육의 신선도, 지방산패도 및 항산화력의 변화는 T0구보다 T1구가 느리게 나타나서 쑥의 급여에 의한 좋은 효과를 보였다. 가열육의 맛, 다즙성, 연도 및 종합적 기호도는 해동 후 0일째와 3일째 모두 처리구간의 유의적 차이가 없었으나, 향은 쑥을 급여한 T1구가 유의적으로 우수하였다.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2002년도 하계 학술대회 논문집
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• pp.394-399
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• 2002

국민소득의 증대와 함께 소비자의 고품질 농축산물에 대한 수요와 관심이 날로 증가하고 있다 이에 따라 안전하며 고품질인 농축산물을 소비자에게 공급하기 위하여 안전한 농축산물의 생산, 신선도 유지를 위한 유통구조의 개혁, 품질 및 안전성 평가기술개발을 위한 노력이 보다 더 요구되고 있다. 소비자가 믿고 구매하기 위해서는 농축산물에 대한 품질보증이 필수적이며 이를 위해서는 신속하고 정확한 품질 및 유해물질의 판정기술 개발이 필요하다. 많은 농축산물에 있어서 주요 품질인자인 숙도 및 신선도의 변화는 휘발성 화학물질로 이루어진 냄새의 변화로 나타나므로 이를 측정하여 품질 및 안전성을 간접적으로 판정할 수 있다 기존의 냄새에 의한 품질 판정은 판별전문가에 의한 관능평가법 또는 GC(Gas Chromatography)나 GC/MS(Gas chromatograph mass spectrometer)에 의하여 주로 이루어져 왔다. 하지만, 관능평가법의 경우 판별전문가의 개인적인 차이, 피로, 건강상태 등에 따라 판정의 객관성이 떨어질 우려가 있고, GC나 GC/MS를 이용할 경우 냄새분석에 많은 시간과 노력이 소요되는 문제점이 있다. (중략)

• Nutrition Research and Practice
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• 제15권6호
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• pp.747-760
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• 2021

BACKGROUND/OBJECTIVES: The consumption of home meal replacement (HMR) is increasing among college students in Korea and China. In particular, Chinese college students studying abroad in Korea (CSK) show changes in their dietary behavior after migration, and HMR consumption for meal substitution is also increasing. This study was conducted to compare the HMR consumption behaviors and HMR development needs of CSK, Chinese college students in China (CSC), and Korean college students in Korea (KSK). SUBJECTS/METHODS: The subjects were 570 college students (180 CSK, 200 CSC, and 190 KSK) who had experience of HMR consumption. Data were collected by face-to-face survey in 2019 and analyzed using SPSS 25.0. RESULTS: The majority of the subjects purchased HMR to 'saving time' and 'preventing meal skipping'. Average purchase price per HMR was about 5,000 won for the CSK and KSK, and about 3,000 won for the CSC. The most important attributes when selecting HMR for the CSK and CSC were hygiene, freshness, and taste in that order, while for the KSK were taste, price, and hygiene. Rice was preferred by the KSK while grilled and fried dishes were preferred by the CSK and CSC. In terms of development needs, dessert and meat-based side dishes were highest in all three groups. The preferred food materials for more than 50% of the subjects of all groups were beef, chicken, pork, shrimp, and squid, and spinach and Chinese cabbage in the CSK, and onion in the KSK. CONCLUSIONS: This study shows more effort is needed to develop the healthy customized HMR for college students studying in Korea and China, and that focuses are placed by CSK on hygiene and freshness, by CSC on meat side dishes, hygiene, and price, and by KSK on snacks (as meal substitutes), taste, and price.

• 한국식품조리과학회지
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• 제26권4호
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• pp.347-357
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• 2010

This study was assessed the menu satisfaction and preferences of high school boarding students in Gyeongggido. Data collection was carried out through surveys given to 300 high school boarding students; a total of 274 were usable. Statistical analyses were done using the SAS package program (version 8.2 for Windows). The results of this study are summarized as follows: 54.0% of respondents were freshman and 46.0% were sophomores: and 52.9% of respondents were male and 47.1% were female. According to the results of the menu satisfaction survey, males and females significantly differed on appropriate food temperature, freshness of food, harmonic combination of menu, menu variety, quality of ingredients, appearance of food, and frequency of supplied nutrition information. A significant difference regarding menu satisfaction was also found between grade level. First grade students were more satisfied than second grade students. Moreover, menu preferences were significantly high for omelet-rice, fried rice, pork-on-the-bone soup, deep-fried chicken, fruit salad, spicy chinese cabbage salad kimchi, chinese cabbage kimchi, and all desserts. On the other hand, pumpkin and rice porridge, beef and rice porridge, barley rice, soft tofu stew, soybean paste soup, braised japanese spanish mackerel, and sauteed squash were not significantly preferred. The results showed that high school boarding students' menu preferences differed depending on gender, grade, and boarding period. In conclusion, the results of this study should provide dieticians information for improving menu planning. In addition, foodservice satisfaction of the boarding school students can be improved by continuous menu improvement.