• Title, Summary, Keyword: low-salted

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Fermentation Properties of Low-Salted Doenjang Supplemented with Licorice, Mustard, and Chitosan (감초, 겨자 및 키토산을 첨가한 저염 된장의 발효 특성)

  • Lim, Seong-Il;Song, Sun-Mi
    • Korean Journal of Food Science and Technology
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    • v.42 no.3
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    • pp.323-328
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    • 2010
  • After supplemention with the licorice (Glycyrrhiza glabra), mustard (Brassica juncea), and chitosan as food additives to low-salted doenjang containing 30% lower salt than control doenjang (12.7% salt), fermentation properties of doenjang were investigated for 40 days. Adding the licorice, mustard, and chitosan to low-salted doenjangs containing 10.2% and 8.9% of salt did not affect the acidity, viable cell count, or color of doenjang. A white pellicle-forming strain was detected at the surface of low-salted doenjangs (10.2% and 8.9% salt) but not the control doenjang and low-salted doenjangs added with mixed additives (licorice, mustard, and chitosan). The amino nitrogen content of 8.9% salted doenjang added with mixed additives at 20 days was 332 mg% and this value was similar to that of 12.7% salted doenjang at 40 days. In sensory evaluation, the 8.9% salted doenjang added the additives had the highest score in overall palatability. These results indicate that salt contents of doenjang could be lowered to 8.9% by adding licorice, mustard, and chitosan, resulting in improved palatability, shortened fermentation period, and inhibited abnormal fermentation.

Changes in Characteristics of Low-salted Kochujang with Licorice (Glycyrrhiza glabra), Mustard (Brassica juncea), and Chitosan during Fermentation (감초, 겨자 및 키토산을 첨가한 저염 고추장의 특성 변화)

  • Lim, Seong-Il;Song, Sun-Mi
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.4
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    • pp.560-566
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    • 2010
  • Changes in characteristics of low-salted Kochujang added with mixed additives (licorice 0.8%, mustard 0.7%, chitosan 2%) were investigated during fermentation for 40 days. There was no significant difference in viable and yeast cell counts and color among all treatments, whereas lactic acid bacteria counts of 6.8% and 5.9% salted Kochujang added with the mixed additives (p<0.05) were significantly lower than that of control. The phenomenon of abnormal fermentation was observed on surface of low-salted Kochujang but not the low-salted Kochujang added with the mixed additives. The level of amino nitrogen in low-salted Kochujang was close to that of 8.5% salted Kochujang at 20 days of fermentation; however, the amino nitrogen content in 5.9% salted Kochujang added with the additives was 1.6 times higher than in 8.5% salted Kochujang at 40 days. In sensory evaluation, 5.9% salted Kochujang with the additives had the highest score in overall palatability. These results indicate that salt contents of Kochujang could be lowered up to 5.9% by addition of the mixture of licorice, mustard and chitosan, resulting in improvement of palatability and shortening of fermentation time.

Effects of Gamma Irradiation on Taste Compounds in Processing of Low Salted and Fermented Squid (감마선 이용 저염 오징어젓갈 제조시 정미성분의 변화)

  • 변명우;이경행;김재훈;이주운;이은미;김영지
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.5
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    • pp.1051-1057
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    • 1999
  • The effects of gamma irradiation on taste compounds of low salted and fermented squid were investig ated. Salted and fermented squid products were prepared with salt concentrations of 5%, 10%, and 20% and was fermented at 15oC and 25oC after gamma irradiation with a dosage of 2.5~10 kGy. Amino nitrogen (AN), volatile basic nitrogen(VBN), trimethylamine(TMA), and hypoxanthine(Hx) contents were examined during the fermentation periods. Results showed that gamma irradiation had no effect on the initial con tents of AN, VBN, TMA, and Hx compared with non irradiated salted and fermented squid. During the fermentation periods, these contents rapidly increased in accordance with the decrease in NaCl concen tration and irradiation dose, and the increase in fermentation temperature. Specifically, the taste compounds of salted and fermented squid prepared with a NaCl concentration of 10% and an irradiation dose of 10 kGy maintained the appropriate level for the fermentation period at 15oC.

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The Shelf-Life Extension of Low-Salted Myungran-jeot. 2. The Effects of Commercial Preservatives on the Shel-Life of Low-Salted myungran-jeot (저염 명란젓의 Shelf-Life 연장 방안 2. 보존제 첨가에 의한 연장 효과)

  • 김상무;이근태
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.26 no.3
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    • pp.456-461
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    • 1997
  • Sodium lactateand sodium citrate, traditional food preservatives, were added to extend the shelf-life of the loow-salted Myungran-jeot, and various chemical and microbiological analyses were carried out with Muungran-jeot, and various chemical and microbiological analyses were carried out with Myungran-jeot femented at 1$0^{\circ}C$. pH was decreased in the beginning stage of fermentation and then increased, whereas the content of lactic acid was increased during fermentation. But, lactic acid production of the low-salted Myungran-jeot with preservative were lower than control. The NH$_2$-N content of the low-salted Myungran-jot with sodium citrate was increased in the beginning of fermentation and then decreased. Sodium citrate inhibited the productions of VBN and TMA during the fermentation of Myungran-jeot, whereas sodium lactate inhibited the productions of VBN and TBA. Sodium lactate inhibited the growths of proteolytic bacteris and fungi. The estimated shelf-lives of the Myungran-jeot with control, sodium lactate, and sodium citrate were about 11, 13, and 13 days, respectively.

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Isolation of Weissella strains as potent probiotics to improve antioxidant activity of salted squid by fermentation

  • Le, Bao;Yang, Seung Hwan
    • Journal of Applied Biological Chemistry
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    • v.61 no.1
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    • pp.93-100
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    • 2018
  • The aim of this study was to enhance the antioxidant activity of salted squid by inoculation of two Weissella spp. strains (W. cibaria FB-069 and W. viridescens FB-077) isolated from traditional Korea salted squid. The safety and probiotic potential characteristics of these two strains were evaluated. The safety of these strains was analyzed based on hemolytic activity, mucin degradation, biogenic amino production, and resistance to antibiotics. These lactic acid bacteria showed probiotic potential, including resistance to gastrointestinal tract conditions, adhesion to Caco-2 cells, and aggregation. The low-salted squid fermented with Weissella strains had consistently higher antioxidant activity through changing their amino acid profiles. Therefore, W. cibaria FB-069 and W. viridescens FB-077 might be good candidates for fermentation of salted squid to develop functional food with enhanced health benefits.

The Effects of Sulfite Salts on the Shelf-life of Low-salted Myungranjeot (Soused Roe of Alaska Pollack) (Sulfite 염에 의한 저염 명란젓의 보존 효과)

  • Kim, Sang-Moo
    • Korean Journal of Food Science and Technology
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    • v.28 no.5
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    • pp.940-946
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    • 1996
  • One of the biggest Problems in making jeotkal is the reduction of its shelf-life when lowering the salt content from 20-30% to below 10%. Therefore, in order to extend the shelf-life of the low-salted jeotkal, prior to setting the minimum allowance value of sulfiting agents as food additives for fermented fish products, the preservative effects of sulfite salts on the low-salted myungranjeot (soused roe of Alaska pollack) were studied through various chemical and microbial analyses. The pHs of the low-salted Myungranjeot treated with bisulfite and metasulfite salts rapidly decreased in the biginning of fermentation, while the lactic acid contents increased constantly. Sodium bisulfite and metasulfite enhanced the production of $NH_2-N$ after 10 day-fermentation, whereas they inhibited the production of VBN, TMA and TBA, and the growth of microorganisms including fungi during fermentation. The estimated shelf-lives of low-salted myungranjeot treated with control, sodium sulfate, sodium bisulfite, and sodium metasulfite on the basis of VBN 50 mg% were about 16, 14, 20 and 24 days, respectively.

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Quality Changes in Low-Salted Squid Jeot-gal during Fermentation and Determination of Shelf-life (저식염 오징어 젓갈의 숙성 중 품질변화 및 최적 유통기한 설정)

  • Lee, Kyoung-Gook;Kim, Sang-Moo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.5
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    • pp.687-694
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    • 2012
  • $Jeot-gal$ is a traditional Korean fermented seafood with a salt concentration of 15~20%. However, today's consumers prefer low-salted foods as they have become aware that high levels of salt cause hypertension and diabetes. In this study, the quality characteristics and shelf-life of low-salted squid $Jeot-gal$ were investigated at different fermentation temperatures and salt concentrations. The shelf-lives of 3%-salted squid $Jeot-gal$ fermented at -1, 4, and $10^{\circ}C$ were 45, 31, and 23 days, respectively, whereas those of 5%-salted squid $Jeot-gal$ were 52, 36, and 25 days. The DPPH radical scavenging activity of the ethanol extract of squid $Jeot-gal$ was stronger than that of the water extract. However, the other antioxidative activities, such as hydrogen peroxide and hydrogen peroxide radical scavenging activities, as well as enzyme inhibitory activities were very low at 20 mg/mL of water and ethanol extracts. Based on the results of the sensory evaluation, the quality of low-salted fermented squid $Jeot-gal$ was almost similar to that of commercial squid $Jeot-gal$ with a high salt concentration.

Quality Characteristics of Doenjang Prepared with Fermented Hwangchil (Dendropanax morbifera) Extract (황칠 발효액을 첨가한 된장의 품질 특성)

  • Park, Seong-Eun;Seo, Seung-Ho;Yoo, Seon-A;Na, Chang-Su;Son, Hong-Seok
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.45 no.3
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    • pp.372-379
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    • 2016
  • This study was performed to investigate the quality characteristics of various salted (8, 10, and 12%) Doenjang prepared with fermented Hwangchil (Dendropanax morbifera) extract as well as the effect of Bacillus methylotrophicus S8 strain, isolated from soy sauce, as a starter culture. After fermentation, the total cell number of low-salted Doenjang (8% and 10%) prepared with fermented Hwangchil was lower than that of Doenjang without fermented Hwangchil. Low-salted Doenjang (8% and 10%) showed higher total acidity, amino acid, and organic acid levels as well lower pH levels than high-salted Doenjang (12%), indicating active fermentation. The highest levels of lactic acid (48.1 mg/L) and glutamic acid (549.0 mg/L) were observed in low-salted Doenjang (8%) fermented with B. methylotrophicus S8 strain. The low-salted Doenjang (8%) fermented with B. methylotrophicus S8 also showed the highest score in overall preference of sensory evaluation. These results indicate that Hwangchil extract fermented with B. methylotrophicus S8 can be used as a starter for making low-salted Doenjang, resulting in improved palatability, and inhibition of abnormal fermentation.

Quality Changes of Salted Baechu with Packaging Methods during Long Term Storage (포장방법을 달리한 절임배추의 장기저장중 품질변화)

  • Han, Eung-Soo;Seok, Moon-Sik;Park, Ji-Hyun
    • Korean Journal of Food Science and Technology
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    • v.30 no.6
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    • pp.1307-1311
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    • 1998
  • Optimal packaging methods for the long term storage of salted winter baechu were investigated. Salted baechu was packaged individually in 20 ㎏ unit weight in LDPE (low density polyethylene), HDPE (high density polyethylene), PVC-box and then stored at $0^{\circ}C$ for 8 weeks. During storage, quality index of salted baechu were measured in terms of salinity, pH, reducing sugar content, total cell counts and lactic acid bacterial counts. Salted baechu deteriorated rapidly in PVC-box, and slowly in HDPE but sustained for 8 weeks in LDPE. In all treatment, salted baechu was maintained better at submerged parts in exudate, but deteriorated at emerged parts.

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Evaluation of Fruits and Vegetables Intake for Prevention of Chronic Disease in Korean Adults Aged 30 Years and Over: Using the Third Korea National Health and Nutrition Examination Survey (KNHANES III), 2005 (만성질병 예방 측면에서 본 30세 이상 한국 성인의 과일과 채소 섭취 평가: 2005년 국민건강영양조사 자료를 이용하여)

  • Kwon, Jung-Hyun;Shim, Jae-Eun;Park, Min-Kyung;Paik, Hee-Young
    • Journal of Nutrition and Health
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    • v.42 no.2
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    • pp.146-157
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    • 2009
  • Korean diet is high in plant foods but also high in salted vegetables. World Cancer Research Fund (WCRF) recommends consumption of fruits and vegetables excluding salted vegetables for prevention cancer. This study aimed to analyze relations between intakes of salted and non-salted vegetables and socioeconomic factors, providing a data for targeted groups in promotion of fruits and vegetables consumption. Dietary and socioeconomic status data of the 5,400 subjects over 30 years of age from the 2005 Korea National Health and Nutrition Examination Survey (KNHANESIII) were used. Dietary intake data from KNHANESIII was obtained by one day 24-hour recall method. Mean daily intakes of salted vegetables, non-salted vegetables and fruits of subjects were 151 g, 237 g, and 71 g respectively. Mean daily intake of salted vegetables was significantly higher in men than women for daily amount (173 g vs. 133 g) as well as percentage of total food intake (9.9% vs. 9.6%). Subjects living in rural area consumed more salted vegetables. Salted vegetables as percent of total food were lower in subjects with higher education levels (p < 0.001). Intakes of non-salted vegetables were significantly affected by age and gender. Intake levels of fruit were significantly higher in younger groups, in females, and subjects with higher income and education levels (p < 0.05). Average intake of fruits and non-salted vegetables was 307 g, lower than WCRF recommended level of 400 g for personal guideline. Intake of salted vegetables was positively correlated with sodium intake (Pearson's correlation coefficient, r = 0.43) but less so with potassium (r = 0.16) and other micronutrients intake (r < 0.1). On the other hand, non-salted vegetables had higher correlations with potassium (r = 0.45), carotene (r = 0.38), vitamin A (r = 0.37), iron (r = 0.34) and low for sodium (r = 0.13). Fruits intake was highly correlated with vitamin C intake (r = 0.46). Proportion of subjects satisfying WCRF personal guideline of fruits and non-salted vegetables was 25.7%. Results of this study indicate that intake of salted vegetable is considerably high among Koreans, and it is highly correlated with sodium intake and less so with other micronutrients.