• 한국식품조리과학회지
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• 제27권2호
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• pp.19-29
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• 2011

Sweet potato powders made from eight Korean varieties, including purple-fleshed, orange-fleshed, and commercial dry type sweet potatoes, were investigated for physicochemical and pasting properties to develop processed food. Crude protein and lipid contents of Shinjami and Borami were higher than those of other varieties. The lightness value of raw sweet potato flesh was the highest value in Shinchunmi, and the lowest in Shinjami. Using the color difference (${\Delta}E$), color similarities compared to the white plate occurred in the following order; purple-fleshed > orange-fleshed > commercial dry type sweet potatoes. Total and damaged starch contents were significantly different (p<0.05). Total starch content of sweet potatoes was higher in commercial dry sweet potatoes (61.89-70.46%), particularly Shinchunmi (70.46%) but lower in orange-fleshed sweet potato (48.87 and 49.53%, respectively). Water binding capacity of Yeonwhangmi, swelling power and solubility of Shinyulmi were the highest values (174.70, 25.54 and 87.49%, respectively) among them (p<0.05). But oil absorptions of Shinyulmi and Shinchunmi showed lower values (97.08 and 97.54%, respectively). All sweet potato powders had an A type x-ray diffraction pattern. The initial pasting temperatures of sweet potato powders ranged from 69.50 to $75.95^{\circ}C$ and the amylolytic enzyme in sweet potato powder lowered pasting viscosity.

• Nutrition Research and Practice
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• 제10권5호
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• pp.546-554
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• 2016

BACKGROUND/OBJECTIVES: The aim of this study was to investigate the perception of sugar reduction, nutrition education, and frequency of snacking in children according to the self-perceived dietary preferences for sweet taste by mothers in Busan. SUBJECTS/METHODS: A total of 277 mothers were surveyed, and their perceptions of sugar reduction and the frequency of snacking in children were assessed using a questionnaire. The subjects were classified into either a sweet (n = 91) or an unsweet (n = 186) group according to their self-perceived preferences for a sweet taste. RESULTS: In the sweet group, the results for sweet products were sweetened ice (86.8%), confectionery (74.7%), processed milk (73.6%), carbonated beverages (71.4%), and fermented milk (53.9%). In the unsweet group, the results were sweetened ice (88.7%), carbonated beverages (78.5%), processed milk (75.8%), confectionery (69.4%), and fermented milk (50.5%). The necessity of sugar intake reduction was high in both groups (sweet = 89.0%, unsweet = 82.8%). Beverage purchases after identifying the nutrition labeling was significantly lower in the sweet group than in the unsweet group (P < 0.05). The reasons for the beverage purchases instead of water were "habitually" (50.5%) and "like sweet taste" (25.3%) in the sweet group (P < 0.01). Snacking in children was significantly higher in the sweet group based on the increased frequencies of carbonated drinks (P < 0.01), fast food (P < 0.001), candy and chocolate (P < 0.05), crackers (P < 0.01), ramen (P < 0.01), and fish paste/hotdogs (P < 0.01). The frequency of purchase education after identifying the nutrition labeling was significantly lower in the sweet group than in the unsweet group (P < 0.01). CONCLUSIONS: These findings suggest that a perception of sugar reduction and practical nutrition education aimed at reducing the sugar intake are necessary to improve dietary habits.

• 한국식품영양학회지
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• 제25권3호
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• pp.529-537
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• 2012

고구마의 새로운 이용방법으로 고구마의 기능성을 활용한 고구마 된장을 제조하였다. 고구마 페이스트와 대두분말을 1:1로 혼합하여 펠렛을 제조한 다음 황국균을 접종, 배양하여 효소활성이 높은 고구마 황국을 제조하였고, 제조한 신황미와 신자미 황국(20, 45%)에 증자대두와 식염 10%를 혼합, 60일간 발효 숙성하여 저염 고구마 된장을 제조하였다. 고구마 된장에는 감칠맛 성분인 글루탐산이 일반된장보다 많은 양 함유되어 있었고 숙성에 의해 항산화활성이 증가하였으며, DPPH 라디칼 소거활성($EC_{50}$)은 신자미 황국을 45% 혼합한 신자미 된장에서 0.9 mg으로 가장 높았다. 관능평가에서 신황미 황국을 45% 혼합한 신황미 된장의 선호도가 가장 좋았다.

• 한국식품영양과학회지
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• 제39권10호
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• pp.1476-1480
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• 2010

육질색에 따른 일반고구마, 주황색고구마 및 자색고구마로부터 갈변방지제 처리와 건조방법을 달리하여 분말을 제조한 후 고구마 분말의 이화학적 특성을 분석하였다. 고구마 분말의 조단백질, 회분 및 식이섬유 함량은 자색고구마에서 가장 높았고 조지방과 전분 함량은 주황색고구마에서 가장 높게 나타났다. 고구마 분말의 평균 입자크기는 주황색고구마 분말에서 가장 크게 나타났으며 각각의 고구마 분말에서 둥근형 또는 다각형의 전분입자 형태를 관찰할 수 있었다. 고구마 분말의 수분흡수지수 및 oil 흡수율은 열풍건조방법으로 제조한 분말이 동결건조에 의한 분말보다 높은 경향을 주었다. 고구마 분말의 수분용해도지수는 일반고구마와 자색고구마의 경우 건조조건에 따른 차이가 크지 않은 반면, 주황색고구마의 경우 열풍건조 한 분말에서 수분용해도지수가 높게 나타났다.

• 한국식품저장유통학회지
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• 제23권4호
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• pp.538-546
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• 2016

고추장 제조시 멥쌀의 일부를 고구마로 대체하여 고추장 발효 중 이화학적 특성을 비교하였다. 고구마를 혼합한 고추장이 발효 후기에 효모수 감소가 심하였으나 세균수는 차이가 없었다. 고구마의 혼합비율이 증가할수록 ${\alpha}$-amylase 활성은 높았으나 protease 활성은 낮았다. 자색고구마 혼합 고추장이 Hunter L, a, b값이 낮았으며 발효 중 ${\Delta}E$값의 변화는 호박고구마 혼합구에서 심하였다. 고추장의 pH는 발효 8주까지 저하되었으며, 적정산도는 4주경에 급격히 증가하였다. 고구마 혼합 비율이 증가할수록 고추장의 ORP와 Aw는 증가하였다. 고추장의 환원당은 고구마 혼합구에서 낮았으며, 알코올의 생성은 호박고구마 혼합 고추장에서 높았다. 아미노산성 질소는 고구마 혼합 고추장에서 적었으나 발효 후기에는 큰 차이가 없었다. 고추장의 맛은 호박고구마 5~10%, 색상과 향기는 자색고구마 5~10% 혼합구가 양호하였으며, 고구마를 이용한 고추장의 제조는 호박고구마보다 자색고구마인 신자미 품종을 이용하는 것이 관능적으로 우수하였으며 혼합비율은 10% 정도가 양호하였다.

• 대한약침학회지
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• 제14권2호
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• pp.37-43
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• 2011

Objectives : This study was carried out to compare the Sweet Bee Venom (referred to as Sweet BV hereafter) acupuncture parallel treatment to treatment with acupuncture only for the patient diagnosed with lumbar spine sprain and find a better treatment. Methods : The subjects were patients diagnosed with lumbar spine sprain and hospitalized at Suncheon oriental medical hospital, which was randomly divided into sweet BV parallel treatment group and acupuncture-only group, and other treatment conditions were maintained the same. Then, VAS (Visual Analogue Scale) was used to compare the difference in the treatment period between the two groups from VAS 10 to VAS 0, from VAS 10 to VAS 5, and from VAS 5 to VAS 0. Result & Conclusion : Sweet BV parallel treatment group and acupuncture-only treatment group were compared regarding the respective treatment period, and as the result, the treatment period from VAS 10 to VAS 5 was significantly reduced in sweet BV parallel treatment group compared to the acupuncture-only treatment group, but the treatment period from VAS 5 to VAS 0 did not show a significant difference. Therefore, it can be said that sweet BV parallel treatment is effective in shortening the treatment period and controlling early pain compared to acupuncture-only treatment.

• The Plant Pathology Journal
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• 제18권1호
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• pp.12-17
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• 2002

For the molecular detection of Sweet potaio feathery mottle virus (SPFMV) from diseased sweet potato plants, reverse transcription and polymerase chain reaction (RT-PCR) was performed with the use of a set of virus-specific primers to amplify an 816 bp product. The viral coat protein gene was selected for the design of the primers. No PCR product was amplified when Turnip mosaic virus, Potato vims Y or Cucumber mosaic virus were used as template in RT-PCR with the SPFMV-specific primers. The lowest concentration of template viral RNA required for detection was 10 fg. The vim was rapidly detected from total nucleic acids of leaves and roots from the virus-infected sweet potato plants as well as from the purified viral RNA by the RT-PCR. Twenty-four sweet potato samples were selected and analyzed by RT-PCR and restriction fragment length polymorphism (RFLP). RFLP analysis of the PCR products showed three restriction patterns, which resulted in some point mutations suggesting the existence of quasi-species for the vims in the infected sweet potato plants.

• 한국식품조리과학회지
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• 제29권3호
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• pp.275-281
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• 2013

This study was performed to evaluate the quality characteristics and antioxidative activities of cookies prepared with different amounts of purple sweet potato powder. Moisture and crude ash contents were lowest in the control group followed in order by the 10%, 20%, and 30% purple sweet potato powder addition groups. The lightness and yellowness values measured by Hunter color system decreased based on the amount of purple sweet potato powder concentration added to cookies. The total phenolic compound and anthocyanin contents were the highest in 30% purple sweet potato powder added cookies. The DPPH radical scavenging activity of 30% purple sweet potato powder added cookies showed the highest values among groups. In the sensory evaluation, the scores for taste, texture and overall preference were significantly highest in cookies with 10% and 20% purple sweet potato powder. Considering the scores of antioxidant activity and sensory evaluation, the concentration of between 10% and 20% addition of purple sweet potato powder would be ideal for development of functional cookies.

• 한국작물학회지
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• 제49권5호
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• pp.381-388
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• 2004

In Korea, production of super sweet corn has been economically feasible and is substituting for traditional sweet corn due to better flavor in recent years. Major limiting factors for super sweet corn production are low field emergence and low seedling vigor. The optimum water potential (WP) for the priming of normal and aged seeds of dent, sweet (su) and super sweet (sh2) corns was studied to improve low seed quality. Seeds were primed at 0, -0.3, -0.6, -0.9, and -1.2 MPa of polyethylene glycol (PEG) 8000 solution at $15^{\circ}C$ for 2 days. Priming effects differed depending on the type of corn, seed quality, and WP of PEG solution. Although WP of priming solution did not influence the emergence rate of extremely high quality normal dent corn seeds, it reduced time to $50\%$ emergence (T50) and increased plumule weight. In contrast, the emergence rate of aged field corn was improved by seed priming at 0 MPa and plumule weight and $\alpha-amylase$ activity was enhanced. The optimum WP for both normal and aged sweet and super sweet corn seeds was between -0.3 and -0.6 Mpa. At the optimum WP emergence rate, $\alpha-amylase$ activity, and content of DNA and soluble protein increased, while T50 and leakage of total sugars and electrolytes reduced.

• 동아시아식생활학회지
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• 제22권4호
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• pp.489-496
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• 2012

This research investigated the quality characteristics and anthocyanin content of wet noodles according to the amount of freeze-dried purple sweet potato powder. For viscosity, initial pasting temperature tended to increase compared to the control group, whereas peak viscosity, peak viscosity time and final viscosity steadily decreased. As the amount of purple sweet potato powder increased, breakdown value of viscosity and set back value significantly decreased. For chromaticity, as the amount of purple sweet potato powder increased, L-value decreased gradually, whereas a-value gradually increased and b-value significantly decreased compared to the control group. Anthocyanin content significantly increased in the addidtive group (91.79) compared to the control group (70.20). Measurement of texture characteristics found that hardness was highest in the control group, but it decreased as the amount of purple sweet potato powder increased. Springiness, gumminess and chewiness were highest in the control group. In the sensory evaluation, color, odor, chewiness, and overall acceptance were high in the 6% addictive group. In this study, by investigating the anthocyanin contents, quality characteristics and sensory attributes of wet noodles with freeze-dried purple sweet potato powder, we found that the 6% additive group is the best. Our results provide basic information for the development of noodles with purple sweet potato powder.