• 한국식품영양과학회지
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• 제46권1호
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• pp.140-145
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• 2017

본 연구에서는 식품으로 활용하기 위해 제조된 잣송이 추출물의 이화학적 품질 특성과 항산화 활성을 탐색하였다. 잣송이 추출물은 수분과 탄수화물이 구성성분 대부분을 차지하고 있었으며, 특히 대조군으로 사용된 매실 추출물보다 수분함량은 낮고 당 함량은 높아 유의적으로 높은 점도를 나타내었다. 또한, 갈색도와 색도는 모두 낮아 매실 추출물과 비교해 숙성 중 Maillard 갈변 반응의 정도가 상대적으로 낮았음을 시사해주었다. 잣송이 추출물은 매실 추출물보다 플라보노이드 함량은 유의적으로 다르지 않았으나 유기산 함량과 갈변도는 1/10 수준으로 유의적으로 낮았고, 총환원력은 매실 추출물의 60% 수준으로 측정되었다. 그런데도 잣송이 추출물에서 매실 추출물과 유사한 높은 금속 소거능과 라디칼 소거 활성이 관찰되었다. 또한, 잣송이 추출물 속 플라보노이드 총량보다도 많은 양인 6.6 mM quercetin과 비교할 때 2배나 높은 SOD 유사 활성을 나타내었다. 이는 잣송이 추출물에 quercetin보다 항산화 활성이 높은 플라보노이드가 존재할 가능성을 보여주며, 플라보노이드 조성에 대한 후속연구의 필요성을 시사해주었다. 본 연구는 잣송이 추출물이 제조법과 용도가 유사한 매실 추출물에 버금가는 항산화 활성을 부여하면서도 상대적으로 높은 당 함량과 낮은 유기산 함량으로 매실 추출물과는 관능적 측면에서 차별화될 수 있는 식품으로서의 활용 가능성을 보여주었다.

• Journal of Applied Biological Chemistry
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• 제65권1호
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• pp.7-15
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• 2022

저장기간에 따른 산딸기 당 침지액의 일반성분, 항산화 활성, 관능평가 및 대사물질을 비교 분석하고 이들의 상관관계를 분석한 결과, 저장기간의 증가에 따른 색의 변화는 주로 갈변반응 때문인 것으로 사료되며 이 과정에서 향기성분들도 새롭게 생겨나는 것으로 확인되었다. 맛과의 상관성을 분석한 결과, 저장 초기에 sucrose가 완전히 fructose와 glucose로 분해되어 단맛이 급속히 감소되었으나 저장기간의 증가에 따른 차이는 없었으며 저장기간의 증가에 따라 succinic acid 함량 증가로 인해 신맛이 증가한 것으로 확인되었다. 휘발성 향기성분인 경우 linalool과 hydroxybenzaldehyde을 제외한 대부분의 성분들이 저장기간이 증가할수록 증가하는 경향을 보였다. 특히 항산화물질로 알려진 citronellol, octanoic acid, hexanoic acid 등의 함량은 저장 10일에 가장 높은 함량을 보였으며 이때 항산화 활성도 가장 높은 것으로 확인되었다. 본 연구에서 산딸기 당 침지액의 저장 중 미생물의 변화 및 갈변반응에 대한 연구를 수행하지 못하였지만 본 연구결과들은 산딸기 당 침지액의 품질이 저장기간에 따라 크게 영향을 받는 것을 확인 할 수 있었으며 산딸기 당 침지액의 제품화 연구에 기초자료로 사용될 수 있을 것으로 사료된다.

• 동의생리병리학회지
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• 제18권5호
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• pp.1456-1462
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• 2004

This study was carried out to understand the effects of Bambusae Caulis in Liquamen manufactured by different production facilities on blood glucose of the mice induced with streptozotocin. Filtered Bambusae Caulis in Liquamen manufactured by two different facilitiesproduction process were used. The physiochemical properties of filtered Bambusae Caulis in Liquamen manufactured by two different facilities(300L×300W×400H and 700L×700W×800H electric furnace) were compared. Furthermore, the effects of filtered Bambusae Caulis in Liquamen were observed in terms of blood glucose, BUN and AL T in the mice induced with streptozotocin. The results were as follows : The pH value was the highest in L-BCL(E)B(pH 2.83) between manufactured by two different facilities. The L-BCL(E)B which observed low values of Hunter's color values show decreased concentration of methanol and phenolic compounds. The blood glucose contents was decreased in the experimental groups compared with the control. The amount of BUN and ALT did not show any differences between control and experimental group.

• Preventive Nutrition and Food Science
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• 제15권2호
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• pp.152-158
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• 2010

This study was designed to determine the best cultivar of kohlrabi for making pickles among KM-1 (Worldcol), KM-2 (Bejo), KM-3 (Takii), and KM-4 (Monsanto) cultivars. The initial pH of pickles was different in all cultivars; however, they all had a pH in the range of 3.81~3.86 after 28 days of storage. The pickles made from KM-4 had the lowest acidity, while there was no significant difference in acidity among the KM-1, KM-2, and KM-3 pickles. The salinity of all kohlrabi pickles was consistent during the storage period. The changes of color values were accelerated in the following order: KM-4>KM-1>KM-2>KM-3. Though kohlrabi pickles were non-fermented, the change in reducing sugar contents was similar to that of a fermented pickle. The highest value of reducing sugar content was found in pickles made with KM-4. In all cases, the firmness of the pickle decreased as time of storage increased. On the initial day, KM-4 pickle showed the highest firmness with 807.4 g. KM-4 also showed the highest firmness on the 28th day of storage with 602.3 g. In sensory evaluation, the KM-4 pickle exhibited the highest texture (hardness) among the pickles. The pickle made with the KM-4 cultivar showed relatively higher firmness of texture than other cultivars, suggesting that KM-4 could be utilized in other kinds of processed foods, in addition to being pickled.

• 한국생활과학회지
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• 제19권5호
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• pp.897-904
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• 2010

This study assessed the quality of barley Dasik manufactured, according to traditional methods, with various levels of Maesil (Prunus mume) extracts at weight percentages of 0% (BD1), 10% (BD2), 20% (BD3), 30% (BD4), 40% (BD5). The Dasik were analysed with proximate analysis, a sugar content analysis, Hunter's color value test, mechanical characteristics test and a sensory evaluation. Increased ratios added Maesil extracts led to the moisture content, crude ash, and crude fat to significantly increase (p<.001). 10% (BD2) had significantly higher levels of crude protein (p<.01). Sugar contents was highest in 0% (BD1) and decreased as the amount of added Maesil extracts increased. This increase also led to higher L-values and b-values of chromaticity (p<.001) and the a-value of 0% (BD1) was significantly higher than the sample groups (p<.001). Changes in texture profile analysis, hardness and gumminess values were highest in the control group and the values of those in the sample group decreased with increasing amounts of Maesil extract (p<.001). It should be noted that, among the samples evaluated, barley Dasik that contained 10% Maesil extract (BD2) had the highest commercial value.

• 동아시아식생활학회지
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• 제22권4호
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• pp.535-542
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• 2012

The purpose of this study was to evaluate the quality characteristics and antioxidant activity of chocolate added with Rehmannia Radix Preparata (R. Radix Preparata) concentrate (0, 3, 6 and 9%). As the amount of R. Radix Preparata concentrate increased, water content significantly. The pH of chocolate decreased significantly as R. Radix Preparata concentrate increased, but the acidity of chocolate increased. Sugar concentration and reducing sugar contents also increased according to the amount of R. Radix Preparata concentrate. The L(lightness), a(redness) and b(yellowness) values significantly decreased as R. Radix Preparata concentrate increased. However, texture was not significantly different among the treatments. As the amount of R. Radix Preparata concentrate increased, DPPH radical scavenging and hydroxyl radical scavenging activities increased. In the results of the sensory evaluation, scores of color, taste, flavor, texture, and overall acceptability were the highest in chocolate added with 6% R. Radix Preparata concentrate. From these results, it was suggested that the optimum addition amount of R. Radix Preparata concentrate to chocolate is 6%.

• 한국식품영양과학회지
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• 제23권1호
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• pp.78-89
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• 1994

To evaluate of quality of Yakju brewed with different types of fermenters(Nuruk) and brewed by a method described in Sallymkyungjae, blucoamylase and protease and protease activities of Nuruk were measured, and proximate composition , coloring degree, acetaldehyde , alcohol , , fusel oils , amino acid content , mineral content and sugar composition of Yakju samples were also determined. It was foung that the lower the pH, the lower the glucoamylase acitvity in Nuruk samples A to E . In A, B, D and H, protease activity washigher at ph 5.5 than at pH 5.0 . Yakju sampels 1 to 5 during fermentation , total acidity and amino acid content were high at the first step and were getting lower gradually at the second step. In Yakju samples 6 to 11 , ethanol content was high in 6b, 7b, 8a, 8b and 11b. At the second step, residual sugar content was getting higher gradually in 7 a, 11 a and 11b. The coloring degree of Yakju wasinfluenced by not only color of Nuruk but also Fe content in Yakju . Of the Yakju examined , only 9a and 9b contained acetaldehyde in trace amounts. Thanol content was the highest in 8a and 8b. Fusel oil content was high in 8a and 8b. In samples 6 to 9 , aspartic acid content was higher in treatment a than treatment a than treatment b, but tyrosine , histidine and proline contents were higher in treatment a than treatment b. The levels of frucose, melibiose, sorbitol, and arabinose in Yakju brewed from unsteamed rice were higher than in Yakju brewed from steamed rice. K content was the lowest in 9a and 9b. Na content was higher in treatment a than in treatment a than in treatment b. In only 6a, Ca/P ratio was more than one.

• 한국식품저장유통학회지
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• 제14권5호
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• pp.552-556
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• 2007

매실리큐르 제조시 사용되는 알코올 농도에 따른 숙성 중 매실 리큐르의 품질 변화를 비교 검토하였다. 산도의 경우, 알코올 농도 30%, 45% 처리구는 숙성 2개월까지는 농도에 관계없이 상승하는 경향을 보였으나, 그 이후 뚜렷한 변화는 관찰되지 않았으며, pH와 색상은 알코올 농도가 증가할수록 유의적으로 높은 경향을 나타내었다. 환원당 함량은 담금액의 알코올 농도가 증가할수록 증가하였다. 숙성 중 polyphenol 함량은 알코올 농도가 높아짐에 따라 증가하였으며, 각 처리구별 30%와 45% 처리구의 경우 숙성 3개월째 각각 630.6, 686.1 ppm 60% 처리구는 숙성 4개월째 791.1 ppm으로 가장 높은 함량을 나타내었다. 담금액중의 유리당은 fructose, glucose, sucrose, maltose가 검출되었으며, 알코올 농도에 관계없이 sucrose와 maltose에 비해 fructose와 glucose의 함량이 높았다. 매실 리큐르 숙성 중 총 유기산 함량은 알코올 농도가 증가함에 따라 증가하는 경향을 나타내었으며, 알코올 농도와 관계없이 citric, lactic, malic, succinic 및 acetic acid순으로 검출되었다. 고 알코올 매실리큐르의 제조용 주정의 농도는 45%가 적절할 것으로 판단되며, 숙성기간은 2개월이 가장 적절할 것으로 판단되었다

• 동아시아식생활학회지
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• 제21권2호
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• pp.235-242
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• 2011

This study focused on the evaluation of the quality and sensory characteristics of salad dressing prepared from soy powder (Gochujang), in order to increase the level of usability for the Gochujang which is the representative seasoning and spice of Korea. The moisture content and pH of the salad dressing increased in proportion to the increasing amount of soy powder (Gochujang) (p<0.001). Regarding the sugar and salt contents, 20% of the soy powder (Gochujang) shows $26.17^{\circ}Brix$, While the largest value for salt content was 4.8%, with a significant difference existing among varivous samples (p<0.001) As the added amount of soy powder (Gochujang) increased, the sugar content of the salad dressing increased with a statistically significant change (p<0.001). Regarding chromaticity, when soy powder (Gochujang) was added the levels of lightness and yellowness showed a decreasing tendency, and the level of redness showed an increasing tendency, with a significant difference existing among various samples(p<0.001). The results of a sensory showed that, as the amount of added soy powder (Gochujang) increased, the color intensity, Gochujang flavor, and hot taste increased (p<0.001). The results of a sensory showed that, as the amount of added soy powder (Gochujang) increased, the Salad dressing of the glossy, sour flavor, sour taste, and oily level decreased tendency (p<0.001). The results of an acceptance test showed that a 15% content of the soy powder (Gochujang)showed the greatest acceptance values in categories such as appearance, taste, texture, and overall acceptability. Therefore, when making a salad dressing with Gochujang, it is appropriate to add a 15% content of Gochujang to improve the quality and sensory characteristics of the salad dressing.

• 한국식품저장유통학회지
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• 제17권6호
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• pp.800-806
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• 2010

천일염을 사용한 김치를 소재로 한 음료의 레시피를 개발하고자 하였다. 천일염으로 만든 김치를 첨가하여 제조한 음료에 대하여 감미료의 선호도는 올리고당 > 벌꿀 > 슈가파우더 > 설탕 > 아스파탐 > 배즙 순으로 나타났다. 관능검사로는 김치첨가음료의 색, 냄새 및 종합적 기호도의 3가지 항목으로 평가하였다. 종합적인 기호도 (Overall acceptance)측면에서 동치미 음료가 6.24점, 백김치음료가 6.00점, 배추김치음료가 5.76점 순으로 나타나 동치미음료가 백김치나 배추김치음료보다 더 좋은 관능검사 점수를 나타내었다. 천일염 김치 첨가량은 10%가 대조구와 차이가 없는 것으로 나타났으며 동치미 음료, 백김치음료, 배추김치음료 세 가지 모두에서 공통적으로 가장 적절한 것으로 조사되었다. 제조 후 상온에서 저장했을 경우 저장 시간의 경과에 따라 백김치나 동치미 음료, 배추김치음료 모두 각 관능검사 항목에 대한 관능평점은 저하되었다.