• 한국식품영양학회지
• /
• 제29권5호
• /
• pp.818-827
• /
• 2016

This study was conducted to develop and validate the Sugar Intake Reduction Test (SIRT) for young children, and included eating behaviors, attitude, and nutritional knowledge about sugars. A draft version of the SIRT was developed after literature review. The final draft of the SIRT was established after two pilot tests of 5 year old children and an expert group's review, and is comprised of a one on one test between an investigator and a child using picture tools. It contained of 20 questions which included 3 components: eating behaviors (5 items), preference for sugar sweetened food (10 items), and nutritional knowledge about sugars (5 items). The final SIRT was conducted on 181 children 5 (n=100) to 6 (n=81) years old, to examine its item and test adequacies. The passing rate of most items significantly increased with increasing age, and most of the item discrimination also differed significantly between the below and upper score groups. The content validity was given a high score by professionals (mean score 3.9 out of 4). Reliability of all the items in the SIRT was high (Cronbach's ${\alpha}=0.82$). Moreover, the total component and the sub-component scores of the SIRT correlated significantly. Our results indicate that the SIRT is a valid tool to measure sugar intake reduction in young children aged 5~6 years.

• 한국연초학회지
• /
• 제28권2호
• /
• pp.75-82
• /
• 2006

This study was carried out to investigate the changes of free sugars, non-volatile organic and fatty acids in flue-cured leaf tobacco during aging. The threshed leaf tobacco(B1O and C1L) produced in 2002 crop year was aged for 21 month in warehouse of Oc-Cheon Leaf Tobacco Processing Factory. The leaf tobacco were sampled at three month intervals for analysis of free sugars, non-volatile organic and fatty acids. The major free sugars of flue-cured were glucose and fructose regardless of tobacco grades. After aging period of 21 months, the contents of glucose and fructose showed a tendency to slightly decrease, and there was no appreciable change in the contents of sucrose in B1O and C1L grades. The major compound of non-volatile organic acid and fatty acid were malic, oxalic and citric, linolenic, linoleic and palmitic acid regardless of tobacco grade. After aging period of 21 months, the contents of malic, malonic, oxalic and fumaric acid showed a tendency to slightly decrease, whereas succinic acid was slightly increased, and maleic acid was not changed in B1O and C1L grades. The decreases in fatty acid contents in B1O and C1L grade tobacco loaves after 21 month aging were 16.5% and 9.8%, respectively. The decreases in linolenic acid contents in two grades were the highest, showing 22.1% and 12.0% reduction after 21 month aging.

• Journal of Plant Biology
• /
• 제36권1호
• /
• pp.113-120
• /
• 1993

Effects of various NaCl concentrations on salt-tolerant callus of tobacco were investigated. Selection of NaCl-tolerant (S) callus was conducted by subculturing Nicotiana tabacum cv. BY 4 callus in 200 mM NaCl-containing MS medium for more than 18 months. In spite of the long subculture period, characteristics of salt tolerance were maintained very stably. Significant differences were found in ion contents of each callus which was subcultured with treatment of various NaCl concentrations: Na+ and Cl- became higher but Mg2+, Ca2+ and K+ became lower with the increasing external salt contents. Therefore, the ratios of Na+/Ca2+ and Na+/K+ also increased resulting close to those of halophytic property. The contents of chlorophylls and carotenoids in S callus were estimated to 3.1 and 2.9 times more, respectively. than those of non-selected (NS) callus (control). The higher content of external NaCl tended to increase the amount of water soluble proteins and to decrease the amounts of the total sugars, reducing sugars and free amino acids. The activity of peroxidase was increased with higher contents of external NaCl in S callus, but it was maintained at a higher level than S callus at lower NaCl, followed by a subsequent decrease above 80 mM NaCl in NS callus. These results suggest that S callus may have a biological system converting energy source to efficient growth leading to reduction of the growth inhibition under stress environment.

• Journal of Ginseng Research
• /
• 제5권2호
• /
• pp.155-162
• /
• 1981

This study was aimed at elucidating the composition and color in ginseng extracts during the processing and the long periods of the storage. The types of sugar were determined by using HPLC. In the model study with the fresh ginseng extracts stored at the elevated temperatures between 70-100$^{\circ}C$ for 24-96 hrs, it was shown an overall increase in the concentration of fructose and the overall reduction in the concentrations of sucrose and maltose with increase in the storage temperature and time. The concentration of glucose increased for 24 hrs of storage at all temperatures studied and then decreased with the storage time. Rhamnose in the extracts stored at 80$^{\circ}C$ for 72 hrs was identified and its concentration was increased at the higher storage temperature. The reduction of the concentrations of sugars related to the development of brown color during the processing and the storage.

• 식품과학과 산업
• /
• 제49권3호
• /
• pp.17-28
• /
• 2016

The concerns over obesity and obesity-related health problems are increasing as many consumers relate these health problems with sugar. The demand for sugar reduction is also rising and regulatory movement by governments including Korea is driven to reflect such demand. For the past decades, there have been diverse development and marketing of various sweeteners to substitute sucrose and high fructose corn syrup. Low caloric alternative sweeteners can be divided into high intensity sweeteners that have greater sweetness potency compared to sucrose, and low intensity sweeteners such as polyols, oligosaccharides and rare sugars that have less sweetness potency. This paper discusses representative low caloric alternative sweeteners, their market and trend.

• Journal of Microbiology and Biotechnology
• /
• 제17권9호
• /
• pp.1430-1436
• /
• 2007

[ ${\alpha}$ ]-Galactosidase was immobilized in a mixture of k-carrageenan and locust bean gum. The properties of the free and immobilized enzyme were then determined. The optimum pH for both the soluble and immobilized enzyme was 4.8. The optimum temperature for the soluble enzymes was $50^{\circ}C$, whereas that for the immobilized enzyme was $55^{\circ}C$. The immobilized enzyme was used in batch, repeated batch, and continuous modes to degrade the raffinose-family sugars present in soymilk. Two hours of incubation with the free and immobilized ${\alpha}$-galactosidases resulted in an 80% and 68% reduction in the raffinose oligo saccharides in the soymilk, respectively. In the repeated batch, a 73% reduction was obtained in the fourth cycle. A fluidized bed reactor was also designed to treat soymilk continuously and the performance of the immobilized ${\alpha}$-galactosidase tested at different flow rates, resulting in a 90% reduction of raffinose-family oligosaccharides in the soymilk at a flow rate 40 ml/h. Therefore, the present study demonstrated that immobilized ${\alpha}$-galactosidase in a continuous mode is efficient for reducing the oligosaccharides present in soymilk, which may be of considerable interest for industrial application.

• 한국식품저장유통학회지
• /
• 제6권3호
• /
• pp.297-302
• /
• 1999

백삼의 저장해충 방제를 위하여 사용되고 있는 phosphine gas 훈증법의 대체방안 연구의 일환으로, 살충 및 살균 효과를 지닌 5 kGy의 감마선 조사와 훈증처리가 상업적 조건으로 포장된 백삼의 수분, 사포닌, 당, 아미노산 등의 함량에 미치는 영향을 처리 직후와 2$0^{\circ}C$/70% RH 조건에서 6개월 간 저장 후에 비교되었다. 백삼의 초기수분 함량은 8.44%로 살충처리에 따라 변화되지 않았으며, 6개월 간 저장 후에도 10% 수준이 유지되어 비교적 안정한 것으로 나타났다. 주요 ginsenoside 함량은 처리 직후에는 안정하였으나 6개월 간 저장 후에는 훈증처리구와 대조구에서 다소 함량이 감소되었다. 유리당 함량은 감마선 조사에 의해 다소 감소되었고, 6개월 저장 후에는 감마선, 훈증 및 대조구의 순으로 낮은 값을 보였다. 유리아미노산 함량은 감마선과 훈증처리에 의해 약 5% 정도 감소되었으며, 6개월 저장 후에는 모든 시험구에서 15% 내외의 함량이 감소되어 생물학적 품질개선을 위한 감마선이나 훈증 처리보다는 저장조건의 영향이 큰 것으로 나타났다.

• Journal of Nutrition and Health
• /
• 제54권4호
• /
• pp.355-372
• /
• 2021

본 연구는 대구광역시 당류 섭취 저감화 정책 마련을 위한 연구의 일환으로 대구시민의 커피전문점 이용현황과 커피전문점 음료의 당류 줄이기에 대한 인식 및 행동의도에 영향을 미치는 요인을 분석하였으며, 그 결과는 다음과 같다. 조사대상자 전체 1,157명 중 남성이 49.5%, 여성이 50.5%이었으며, 연령대는 19-29세 30.8%, 30-39세 30.9%, 40-49세 38.4%였다. 전체 48.7%가 단 음식을 선호하였고, 25.9%가 평소 달게 먹었으며, 연령대가 낮을수록 단 음식 선호와 달게 먹는 비율이 높았다. 커피전문점 이용현황은 단 커피 (음료) 구입 비율은 여성과 낮은 연령대에서 높았고 (p < 0.05, p < 0.001), 커피에 시럽이나 설탕 첨가 비율은 남성과 높은 연령대에서 높았다 (p < 0.001, p < 0.01). 사이드메뉴는 여성과 30대에서 많이 구입하였으며 (p < 0.001, p < 0.05), '가끔 구입한다'가 63.4%였고, 조각케이크 구입이 62.3%로 가장 많았다. 커피전문점 음료의 당류 줄이기에 대한 인식은 일부 당류 줄이기 커피전문점에 대해 42.1%가 인지하였고, 커피전문점 음료의 당류 줄이기가 필요한 것으로 57.9%가 인식하였으며, 커피전문점에서 당류 줄이기를 고려한 음료 구매 경험은 22.3%로 낮은 수준이었다. 여성은 남성보다 당류 줄이기 고려한 음료 구매 경험 비율이 유의하게 높았고 (p < 0.05), 30대, 40대, 20대 순으로 당류 줄이기 커피전문점 인지율과 당류 줄이기 고려한 음료 구매 경험 비율이 높았다 (p < 0.01, p < 0.01). 커피전문점에서 제공하는 음료의 당류 줄이기 방법에 대해 효과성과 이용의사가 높은 방법은 '주문 시 단맛 선택 안내', '당류 저감 음료 이벤트 제공', '당류 저감 음료 개발판매'이었으며, 효과성과 이용의사가 가장 낮은 항목은 '음료 저용량 사이즈 판매'였다. 커피전문점 음료의 당류 영양표시에 대해 59.7%가 인지하였고, 커피전문점 음료의 당류 영양표시 필요성은 68.8%가 인식하고 있었다. 커피전문점에서 음료 구매 시 35.6%가 당류 영양표시를 확인하였으며, 영양표시 확인 후 당류 함량이 많은 경우 대체 구입하거나 구매하지 않는 비율은 77.2%이었다. 당류 줄이기 커피전문점에 대한 행동의도에 영향을 미치는 요인을 분석한 결과 '커피전문점 음료의 당류 줄이기 필요성 인식'과 '당류 줄이기를 고려한 음료 구매 경험'은 행동의도를 증가시키는 요인으로 '달게 먹는 식습관'은 행동의도를 감소시키는 요인으로 나타났다. 이상의 결과, 대구시 성인들의 커피전문점 음료의 당류 줄이기와 당류 영양표시에 대한 전반적인 인식과 실천은 낮은 수준이었다. 그러나 커피전문점에서 제공하는 음료의 당류 줄이기 방법 중 '주문 시 단맛 선택 안내'와 '당류 저감 음료 이벤트 제공', '당류 저감 음료 개발판매'에 대해 효과성과 이용의사가 높게 나타났으며, 향후 당류 줄이기 커피전문점에 대한 행동의도는 긍정적이었고, 커피전문점 음료의 당류 줄이기 필요성 인식은 행동의도에 가장 큰 영향을 미치는 요인으로 나타났다. 따라서 커피전문점의 음료를 통한 당류 섭취를 줄이기 위해서는 국가 차원 혹은 지자체 단위에서 지역주민들의 당류 줄이기에 대한 필요성 인식 형성과 당류 줄이기 실천 방법에 대한 성별, 연령대별 차별화된 맞춤형 교육 및 홍보가 필요하며, 커피전문점에서도 고객의 요구가 반영된 당류 저감화를 위한 노력이 수반되어야 할 것이다.

• Journal of Microbiology and Biotechnology
• /
• 제14권4호
• /
• pp.658-664
• /
• 2004

To find a new utilization of rice bran, nine higher fungi were examined for the production of exo-biopolymer with macrophage stimulating activity from rice bran. Among the exo-biopolymers produced from submerged cultures, Lentinus edodes showed the highest activity, followed by Grifola frondosa, Schizophyllum commune, and Coriolus versicolor. L. edodes also had the most potent macrophage stimulating activity in a liquid culture rather than in a solid culture. In order to improve rice bran utilization and the yield of exo-biopolymer with macrophage stimulating activity, the treatment of Rapidase effectively increased the macrophage stimulating activity (about 30% increase), whereas the other enzymes (Econase, Viscozyme, Ultraflo, Celluclast, and Thermylase) treatments did not increase the macrophage stimulating activity. Exo-biopolymer with macrophage stimulating activity from L. edodes contained mainly neutral sugars (58.7%) with considerable amounts of uronic acid (32.2%) and a small amount of proteins (9.1%). Component sugars of exo-biopolymer consisted of mainly arabinose, galactose, glucose, mannose, and xylose (0.95:0.81:0.96:1.00:0.39, respectively). When the exo-biopolymer was treated with $NaIO_4, NaClO_2$, and pronase, the $NaClO_2$ treatment and pronase digestion had little effect, whereas $NaIO_4$ oxidation significantly decreased the macrophage stimulating activity (47.6% reduction at $100\mug/ml$). Therefore, the carbohydrate moiety in exo-biopolymer from L. edodes plays an important role in the expression of the macrophage stimulating activity.

• Nutrition Research and Practice
• /
• 제13권2호
• /
• pp.134-140
• /
• 2019

BACKGROUND/OBJECTIVES: Excessive sugar consumption may increase the risk for development of several diseases. Although average dietary sugar intake of Koreans is within the recommended level, an increasing trend has been found in all age groups. This study aimed to evaluate the population attributable fractions (PAF) to dietary sugar for disease and death in Korea, and to estimate the socioeconomic effects of a reduction in dietary sugar. MATERIALS/METHODS: The prevalence of sugar-sweetened beverages (SSB) overconsumption (${\geq}20g$ of sugar from beverages) was analyzed using the Korean National Health and Nutrition Examination Survey 2015. Disease-specific relative risks of excessive SSB consumption were obtained through reviewing previous studies. Using the prevalence of SSB overconsumption and each relative risk, PAFs for morbidity and mortality were calculated. Socioeconomic costs of diseases and death attributable to SSB overconsumption were estimated by using representative data on national medical expenditures, health insurance statistics, employment information, and previous reports. RESULTS: Disease-specific PAF to SSB consumption ranged from 3.11% for stroke to 9.05% for obesity and dental caries, respectively. Costs from disease caused by SSB overconsumption was estimated at 594 billion won in 2015. About 39 billion won was estimated to be from SSB consumption-related deaths, and a total of 633 billion won was predicted to have been saved through preventing SSB overconsumption. CONCLUSIONS: Sugars overconsumption causes considerable public burdens, although the cost estimates do not include any informal expenditure. Information on these socioeconomic effects helps both health professionals and policy makers to create and to implement programs for reducing sugar consumption.