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Lee DY, Chung SJ, Kim KO. Sensory Characteristics of Different Types of Commercial Soy Sauce. ACTA ACUST UNITED AC 2013. [DOI: 10.7318/kjfc/2013.28.6.640] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kim YK, Jombart L, Valentin D, Kim KO. A cross-cultural study using Napping®: Do Korean and French consumers perceive various green tea products differently? Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.05.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kim JY, Sung YE, Kim KO. Descriptive Analysis of Toothpaste Flavor Using Novel Sample Preparation Procedure. J SENS STUD 2013. [DOI: 10.1111/joss.12032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chung L, Chung SJ, Kim JY, Kim KO, O’Mahony M, Vickers Z, Cha SM, Ishii R, Baures K, Kim HR. Comparing the liking for Korean style salad dressings and beverages between US and Korean consumers: Effects of sensory and non-sensory factors. Food Qual Prefer 2012. [DOI: 10.1016/j.foodqual.2012.03.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Park CH, Kim KO, Baek IH, Choi MH, Jang HJ, Kae SH, Kim JB, Baik GH, Shin WG, Kim KH, Kim HY. Differences in the risk factors of reflux esophagitis according to age in Korea. Dis Esophagus 2012; 27:116-21. [PMID: 23009198 DOI: 10.1111/j.1442-2050.2012.01417.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The prevalence of gastroesophageal reflux disease in Korea has been believed to be low, but the incidence of gastroesophageal reflux disease in Korea is expected to increase because of the longer life expectancy and more ingestion of westernized food. The aim of this study was to report differences in the risk factors of reflux esophagitis (RE) according to age in Korea. We prospectively recruited the subjects who had RE among those who visited a health promotion center for upper gastrointestinal cancer surveillance at Hallym Medical Center (five institutions) between January 2008 and February 2009. The enrolled study participants comprised 742 subjects with RE and 1484 healthy controls. The independent risk factors of RE in young and adult group were male sex, smoking, coffee, body mass index ≥ 25, hiatal hernia, and Helicobacter pylori negativity. The risk factors of RE in elderly group were smoking, coffee, and hiatal hernia. The risk factors for RE according to age group were found to differ. In elderly group, Helicobacter pylori infection was not a significant protective factor contrary to young and adult groups.
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Hong JH, Lee KW, Chung S, Chung L, Kim HR, Kim KO. Sensory characteristics and cross-cultural comparisons of consumer acceptability for Gochujang dressing. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0107-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Cha SM, Chung LN, Chung SJ, Kim KO, Lee SR, Kim HR, Han GJ, Lee JY. Comparative Analysis on Preference for Korean Traditional Foods in Foreigners and Koreans. ACTA ACUST UNITED AC 2012. [DOI: 10.7318/kjfc/2012.27.3.294] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hong JH, Kwon KY, Kim KO. Sensory Characteristics and Consumer Acceptability of Beef Stock Containing the Glutathione-Xylose Maillard Reaction Product and/or Monosodium Glutamate. J Food Sci 2012; 77:S233-9. [DOI: 10.1111/j.1750-3841.2012.02724.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Park HG, Jung MK, Jung JT, Kwon JG, Kim EY, Seo HE, Lee JH, Yang CH, Kim ES, Cho KB, Park KS, Lee SH, Kim KO, Jeon SW. Randomised clinical trial: a comparative study of 10-day sequential therapy with 7-day standard triple therapy for Helicobacter pylori infection in naïve patients. Aliment Pharmacol Ther 2012. [PMID: 22066530 DOI: 10.1111/j.1365-2036.2011.04902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The eradication rates following standard triple therapy for Helicobacter pylori infection are declining worldwide. Recent studies have shown that sequential therapy for H. pylori infection yields high cure rates. AIM To compare the efficacy and tolerability of a sequential regimen as first-line treatment of H. pylori infection with a standard triple regimen. METHODS A total of 348 naïve H. pylori-infected patients from six hospitals in Korea were assigned randomly to standard triple or sequential therapy groups. Standard triple therapy consisted of 20 mg of rabeprazole, 1 g of amoxicillin and 500 mg of clarithromycin, twice daily for 7 days. Sequential therapy consisted of a 5-day dual therapy (20 mg of rabeprazole and 1 g of amoxicillin, twice daily) followed by a 5-day triple therapy (20 mg of rabeprazole, 500 mg of clarithromycin, and 500 mg of metronidazole, twice daily). RESULTS The intention-to-treat (ITT) and per-protocol (PP) eradication rates were 62.2% (95% CI 54.8-69.6%) and 76.0% (95% CI 68.5-83.5%) in the standard triple group, and 77.8% (95% CI 71.4-84.2%) and 87.9% (95% CI 82.3-93.5%) in the sequential group, respectively. The eradication rate was significantly higher in the sequential group compared with the standard triple group in both the ITT and PP populations (P = 0.002 and P = 0.013 respectively), whereas the incidence of adverse events was similar. CONCLUSIONS Ten-day sequential therapy is more effective and equally tolerated for eradication of H. pylori infection compared with standard triple therapy. Sequential therapy may have a role as first-line treatment for H. pylori infection.
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Park HG, Jung MK, Jung JT, Kwon JG, Kim EY, Seo HE, Lee JH, Yang CH, Kim ES, Cho KB, Park KS, Lee SH, Kim KO, Jeon SW. Randomised clinical trial: a comparative study of 10-day sequential therapy with 7-day standard triple therapy for Helicobacter pylori infection in naïve patients. Aliment Pharmacol Ther 2012; 35:56-65. [PMID: 22066530 DOI: 10.1111/j.1365-2036.2011.04902.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The eradication rates following standard triple therapy for Helicobacter pylori infection are declining worldwide. Recent studies have shown that sequential therapy for H. pylori infection yields high cure rates. AIM To compare the efficacy and tolerability of a sequential regimen as first-line treatment of H. pylori infection with a standard triple regimen. METHODS A total of 348 naïve H. pylori-infected patients from six hospitals in Korea were assigned randomly to standard triple or sequential therapy groups. Standard triple therapy consisted of 20 mg of rabeprazole, 1 g of amoxicillin and 500 mg of clarithromycin, twice daily for 7 days. Sequential therapy consisted of a 5-day dual therapy (20 mg of rabeprazole and 1 g of amoxicillin, twice daily) followed by a 5-day triple therapy (20 mg of rabeprazole, 500 mg of clarithromycin, and 500 mg of metronidazole, twice daily). RESULTS The intention-to-treat (ITT) and per-protocol (PP) eradication rates were 62.2% (95% CI 54.8-69.6%) and 76.0% (95% CI 68.5-83.5%) in the standard triple group, and 77.8% (95% CI 71.4-84.2%) and 87.9% (95% CI 82.3-93.5%) in the sequential group, respectively. The eradication rate was significantly higher in the sequential group compared with the standard triple group in both the ITT and PP populations (P = 0.002 and P = 0.013 respectively), whereas the incidence of adverse events was similar. CONCLUSIONS Ten-day sequential therapy is more effective and equally tolerated for eradication of H. pylori infection compared with standard triple therapy. Sequential therapy may have a role as first-line treatment for H. pylori infection.
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Kim KO. Ventilator malfunction due to water condensation during low flow anaesthesia. Anaesth Intensive Care 2011; 39:1155-1156. [PMID: 22165381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Hong JH, Kim KO. Operationally defined solubilization of copper and iron in human saliva and implications for metallic flavor perception. Eur Food Res Technol 2011. [DOI: 10.1007/s00217-011-1590-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lee SM, Kwon GY, Kim KO, Kim YS. Metabolomic approach for determination of key volatile compounds related to beef flavor in glutathione-Maillard reaction products. Anal Chim Acta 2011; 703:204-11. [DOI: 10.1016/j.aca.2011.07.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 07/06/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
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Kim YA, Lee EH, Kim KO, Lee YT, Hammock BD, Lee HS. Competitive immunochromatographic assay for the detection of the organophosphorus pesticide chlorpyrifos. Anal Chim Acta 2011; 693:106-13. [PMID: 21504817 PMCID: PMC3927651 DOI: 10.1016/j.aca.2011.03.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 03/03/2011] [Accepted: 03/03/2011] [Indexed: 10/18/2022]
Abstract
An immunochromatographic assay (ICA) based on competitive antigen-coated format using colloidal gold as the label was developed for the detection of the organophosphorus insecticide chlorpyrifos. The ICA test strip consisted of a membrane with a detection zone, a sample pad and an absorbent pad. The membrane was separately coated with chlorpyrifos Hapten-OVA conjugate (test line) and anti-mouse IgG (control line). Based on the fact that the competition is between the migrating analyte in the sample and the analyte hapten immobilized on the test strip for the binding sites of the antibody-colloidal gold (Ab-CG) conjugate migrating on the test strip, this study suggests that the relative migration speed between the two migrating substances is a critically important factor for the sensitive detection by competitive ICA. This criterion was utilized for the confirmation of appropriateness of a nitrocellulose (NC) membrane for chlorpyrifos ICA. The detection limit of the ICA for chlorpyrifos standard and chlorpyrifos spiked into agricultural samples were 10 and 50 ng mL(-1), respectively. The assay time for the ICA test was less than 10 min, suitable for rapid on-site testing of chlorpyrifos.
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Hong JH, Yoon EK, Chung SJ, Chung L, Cha SM, O'Mahony M, Vickers Z, Kim KO. Sensory characteristics and cross-cultural consumer acceptability of Bulgogi (Korean traditional barbecued beef). J Food Sci 2011; 76:S306-13. [PMID: 22417445 DOI: 10.1111/j.1750-3841.2011.02173.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
UNLABELLED Bulgogi (Korean traditional barbecued beef) is the most well-known Korean food to foreigners. There are, however, few studies on its sensory characteristics and consumer acceptability. This study was performed to identify the sensory attributes of Bulgogi samples prepared with different formulation and to compare the consumer acceptability in Korea and the United States. Bulgogi samples were prepared with varying levels of sugar and soy sauce with/without garlic or sesame oil. Descriptive analysis was conducted by 8 trained panelists. In consumer tests, 42 consumers in Seoul, Korea, 53 consumers in Davis (Calif., U.S.A.), and 39 consumers in St. Paul (Minn., U.S.A.) participated. Higher levels of sugar and soy sauce (SSS) significantly increased sweetness, saltiness, MSG taste, and soy sauce odor/flavor compared to the control made with the standard formula (CON). Elimination of sesame oil (ESO) significantly decreased sesame oil odor/flavor and oiliness, but increased green onion flavor. Elimination of garlic (EGC) significantly increased grilled beef odor/flavor, sesame oil odor/flavor, and oiliness, but decreased intensities of all the other attributes except bitterness. The consumers in Korea and the United States rated their overall liking for all samples similarly, preferring SSS to CON, EGC, and ESO. However Korean consumers seemed to detect the differences caused by formulation changes better than the U.S. consumers and these perceived differences seemed to impact the hedonic and the just-about-right ratings. Increase in soy sauce and sugar increased both Korean and the U.S. consumers' acceptability of Bulgogi, whereas eliminating garlic did not influence the consumer acceptability despite of its significant impact on sensory attributes. PRACTICAL APPLICATION The food industry is increasingly interested in ethnic foods that satisfy sophisticated appetite of today's consumers. Korean cuisine is recently gaining popularity and perceived as "adventurous and spicy," appealing to researchers and marketers in the food industry worldwide. However, it is not easy to develop a new product based on ethnic cuisine because nonsensory factors, such as food neophobia and openness to new culture, can evoke adverse responses from the consumers. A systematic sensory approach can guide the product development by identifying both sensory and nonsensory factors affecting consumer acceptability. This study investigated sensory attributes of Bulgogi (Korean traditional barbecued beef), one of the most famous Korean foods, and compared consumer acceptability between Korea and the United States. The outcomes of this study, such as flavor profiles, consumer responses, evaluation procedure, and approaches taken for cross-cultural comparison, will provide the food industries with valuable information that will help to develop effective strategies for commercializing ethnic foods including recipe development for Bulgogi marinades.
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Son JS, Hong JH, Kim KO. Effects of interval length between tasting sessions and sweetener level on long-term acceptability of novel green tea drinks. Food Qual Prefer 2010. [DOI: 10.1016/j.foodqual.2010.04.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim Y, Kim YS, Yoo SH, Kim KO. Molecular differences of low methoxy pectins induced by pectin methyl esterase I: Effects on texture, release and perception of aroma in gel systems. Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.04.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sin HJ, Kim KO, Kim SH, Kim YA, Lee HS. Effect of Resistant Starch on the Large Bowel Environment and Plasma Lipid in Rats with Loperamide-Induced Constipation. ACTA ACUST UNITED AC 2010. [DOI: 10.3746/jkfn.2010.39.5.684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yoo YH, Lee S, Kim Y, Kim KO, Kim YS, Yoo SH. Functional characterization of the gels prepared with pectin methylesterase (PME)-treated pectins. Int J Biol Macromol 2009; 45:226-30. [DOI: 10.1016/j.ijbiomac.2009.05.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Revised: 05/11/2009] [Accepted: 05/18/2009] [Indexed: 11/28/2022]
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Yun MJ, Oh AY, Kim KO, Kim YH. Patient-controlled sedation vs. anaesthetic nurse-controlled sedation for cataract surgery in elderly patients. Int J Clin Pract 2008; 62:776-80. [PMID: 18067560 DOI: 10.1111/j.1742-1241.2007.01544.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Patient-controlled sedation (PCS) with propofol has been used successfully in various conditions, but controversies exist about its use in sedation of elderly patients for cataract surgery. This study evaluates the efficacy of anaesthetic nurse-controlled sedation (ACS) compared with PCS using the same device and the drug. METHODS All of the 153 elderly patients (aged 51-88 years) undergoing cataract surgery with a sub-Tenon's infiltration were assigned to receive ACS (n = 51) or PCS (n = 51) with propofol or no intra-operative sedation (control, n = 51). Propofol was administered with a bolus dose of 10 mg and a lockout interval of 1 min. Cognitive function, sedation, pain, anxiety, side effects and satisfaction of patients were evaluated. RESULTS The mean +/- SD doses of propofol administered were 34.9 +/- 8.8 mg and 30.1 +/- 30.4 mg in the groups ACS and PCS, respectively. The anxiety score was lower in both ACS and PCS groups compared with control group but was not different between the two groups. Patient's satisfaction was highest in PCS group, ACS group was the next, compared with non-sedated group. Other parameters were not different among the three groups. CONCLUSIONS Both ACS and PCS using propofol provided reduced anxiety compared with control, but patient's satisfaction was higher in the PCS group compared with ACS group.
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Moon JH, Park CH, Kim KO, Hahn T, Yoo K, Park SH, Kim JH, Park CK. Sigmoidorectal intussusception caused by a malignant tumor of the sigmoid colon: computed tomography with three-dimensional reconstruction. Endoscopy 2008; 38 Suppl 2:E67. [PMID: 17366422 DOI: 10.1055/s-2006-944710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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Kim KO, Choe G, Chung SH, Kim CS. Delayed pharmacological pre-conditioning effect of mitochondrial ATP-sensitive potassium channel opener on neurologic injury in a rabbit model of spinal cord ischemia. Acta Anaesthesiol Scand 2008; 52:236-42. [PMID: 18005376 DOI: 10.1111/j.1399-6576.2007.01534.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Diazoxide, pharmacological openers of mitochondrial ATP-sensitive potassium channels have been shown to induce early pre-conditioning in the spinal cord. Here, the authors investigated whether diazoxide also induce delayed pre-conditioning and thereby reduce neurologic complications using a rabbit model of spinal cord ischemia. METHODS Infrarenal blood flow was interrupted for 20 min in 21 rabbits. Non-treated control animals received no pre-treatment. Diazoxide (5 mg/kg) were given 48 h before 20 min ischemia in the 48-h DZ group, whereas 15-min DZ group received diazoxide (5 mg/kg) 15 min before 20-min ischemia. Neurological functions were evaluated using Johnson scores for 3 days after reperfusion, after which, spinal cords were procured for hematoxylin and eosin staining for cell counting. RESULTS Johnson scores revealed a marked improvement in both the diazoxide-treated groups vs. the non-treated control group at 3, 24, 48, and 72 h after reperfusion (P<0.01). The histologic changes were proportional to the Johnson scores, with better preservation of motor neuron numbers in the animals of the 48-h DZ and 15-min DZ group relative to the non-treated controls (81+/-12, 90+/-10, 50+/-23 motor neurons, respectively, P<0.01). No difference was found between the 48-h DZ group and 15-min DZ group with respect to the Johnson scores or neuron numbers. CONCLUSIONS The study demonstrates that pre-treatment with diazoxide 48 h before ischemia, induce delayed pharmacological pre-conditioning, thereby significantly improving clinical neurologic scores and histologic findings in this animal model.
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Lee HS, Kim KO. Difference test sensitivity: Comparison of three versions of the duo–trio method requiring different memory schemes and taste sequences. Food Qual Prefer 2008. [DOI: 10.1016/j.foodqual.2007.07.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Shim JY, Kim KO, Seo BH, Lee HS. Soybean isoflavone extract improves glucose tolerance and raises the survival rate in streptozotocin-induced diabetic rats. Nutr Res Pract 2007; 1:266-72. [PMID: 20368949 PMCID: PMC2849033 DOI: 10.4162/nrp.2007.1.4.266] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 11/20/2007] [Accepted: 11/28/2007] [Indexed: 11/09/2022] Open
Abstract
The present study evaluated the effect of various dosages of soybean isoflavone extract on body weight changes, glucose tolerance and liver function in streptozotocin-induced diabetic rats. One group of normal rats (normal control) was fed an AIN-76-based experimental diet and four groups of diabetic rats were fed the same diet supplemented with four different levels of soybean isoflavone extract for seven weeks. The daily dosages of pure isoflavone for four diabetic groups were set to be 0 mg (diabetic control), 0.5 mg (ISO-I), 3.0 mg (ISO-II) and 30.0 mg (ISO-III) per kilogram of body weight, respectively. The daily consumption of isoflavone at the level of 3.0mg per kilogram of body weight resulted in the suppression of body weight loss and increased the survival rate of diabetic animals one and half times compared to that of the diabetic control group. Blood glucose levels in a fasting state and after the oral administration of glucose were significantly lower in the ISO-II group during the oral glucose tolerance test. The ISO-II group showed a tendency to elongate the gastrointestinal transit time. The activity of serum aminotransferases, indicator of liver function, was not negatively affected by any intake level of isoflavone. The present study demonstrated that the soybean isoflavone extract may be beneficial to diabetic animals by improving their glucose tolerance and suppressing weight loss without incurring hepatotoxicity at the daily dosage of 3.0 mg per kg of body weight.
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Kim HR, Kim KM, Chung SJ, Lee JW, Kim KO. Effects of steeping conditions of waxy rice on the physical and sensory characteristics of gangjung (a traditional Korean oil-puffed snack). J Food Sci 2007; 72:S544-50. [PMID: 17995619 DOI: 10.1111/j.1750-3841.2007.00501.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The objectives of this study were to investigate the effects of steeping period (1, 11, and 21 d) and temperature (15, 25, and 35 degrees C) of waxy rice on the physical and sensory characteristics of Gangjung (a traditional Korean oil-puffed snack). Increasing the steeping period from 1 to 21 d and increasing the temperature from 15 to 35 degrees C markedly increased the oil absorption ratio of Gangjung. Textural analysis indicated that the number of peaks (representing the internal air cell characteristics) for Gangjung decreased in proportion with increasing steeping temperature and period, but that the hardness was affected significantly only by steeping period. Regarding the sensory characteristics of Gangjung, 5 appearance, 7 flavor, and 9 texture attributes were developed and evaluated by trained descriptive panelists. When the steeping temperature and the steeping period were increased, the degree of expansion, size, and degree of external roughness increased, while the strength of external color decreased. Regarding the flavor attributes, the intensity of sweetness and toasted carbohydrate food flavor tended to decrease with increasing steeping temperature and period, while sourness and butyric acid flavor, which are related to the fermentation of waxy rice, increased. Finally, the increased steeping temperature and period decreased the intensity of hardness, crispness, and toughness of Gangjung but increased the degree of fracture, degree of melting, and oiliness.
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