• Title/Summary/Keyword: taste compounds

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Studies on Taste Compounds in Alaska Pollack Sikhae during Fermentation (전통 명태식해 숙성중의 정미성분에 관한 연구)

  • Cha, Yong-Jun;Kim, So-Jung;Kim, Eun-Jeong;Kim, Hun;cho, Woo-Jin;Yoo, Mi-Young
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.9
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    • pp.1515-1521
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    • 2004
  • As one of the research series for the industrialization of sikhae, this study was evaluated the taste compounds present in different temperature conditions, $5^{\circ}C$, $20^{\circ}C$ and alternating temperature (stored at $5^{\circ}C$ after 10 days fermentation at $20^{\circ}C$), respectively. The changes in proximate compositions were negligible but the amounts of total sugar decreased during fermentation. The pH of sikhae products except the product fermented at $5^{\circ}C$, decreased during fermentation and was maintained at the rage of 3.8~4.4 after 10 days. The values of acidity, VBN and amino-N gradually increased with fermentation times and with increasing temperature condition in all products. Three organic acids (lactic, citric and malic acid) were disclosed as key compounds affecting the sourness in Alaska pollack sikhae. The result of taste value revealed that 6 amino acids having sweet and umami taste (aspartic acid, glutamic acid, alanine and lysine) and bitter taste (valine and methionine) as major amino acids affecting the taste of sikhae products, and increased with fermentation times. Hypoxanthine was the main component in ATP related compounds. Amino-N was comprised more over 50% of the Ex-N in sikhae products, and followed by total creatinine-N, TMAO-N and TMA-N in that order.

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 Quality Characteristics of Sauce Made with Shrimp or Crab (새우 및 게로 만든 소스의 품질 특성)

  • 이경임
    • Korean journal of food and cookery science
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    • v.20 no.2
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    • pp.164-169
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    • 2004
  • The purpose of this study was to evaluate sensory characteristics, and to investigate nutrients and taste compounds in sauce made with shrimp or crab. Shrimp sauce fumed out to have better appearance, color, flavor and texture, and the taste of crab sauce was more excellent. In three kinds of shrimp sauces made with different thickeners, sauces used with rice and roux were evaluated to have a good taste and flavor. The major amino acids were -aminobutyric acid, alanine, ${\alpha}$-aminoadipic acid and citruline in shrimp sauce, and taurine, alanine, ${\alpha}$-aminoadipic acid and citruline in crab sauce. The major fatty acids of both samples were palmitic acid and oleic acid, and also palmitoleic acid and linoleic acid were much detected in shrimp and crab sauce. The content of crude protein was 1.62∼2.44%, and that of crude lipid was 0.92∼1.52% in the two sauces. The major minerals were potassium and sodium in shrimp and crab sauce.

THE TASTE COMPOUNDS OF BROILED DRIED SEA MUSSELS (배건담치의 정미성분에 관한 연구)

  • RYU Byeong-Ho;LEE Eung-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.11 no.2
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    • pp.65-83
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    • 1978
  • This study was attempted to evaluate the taste of broiled-dried sea mussel which is a traditional dried Sea food in Korea. The contents of such compounds as free amino acids, nucleotides and their related compounds, TMAO, betaine, and nonvolatile organic acids were analysed. From the results of analysis of nucleotides, the contents of AMP and ADP in broiled-dried Mytilus coruscus and Mytilus edulis appeared higher than other nucleotides and tended to increase slightly after cooking, drying, and storage which might be due to both their stability and the addition of degradation of nucleic acids during cooking. In the free amino acid composition of fresh samples abundant amino were taurine, glycine, serine, glutamic acid, alanine, arginine, threonine, tyrosine, lysine and valine in order. Such amino acids as histidine, leucine, methionine and isoleucine were poor and both proline and phenylalanine were merely trace. The free amino acid composition in the extract of Mytilus corucus and Mytilus edulis after broil-drying was not changed. These amino acids, taurine, glycine, feline, glutamic acid, alanine and arginine were abundant in dried samples as well as in the fresh. The total free amino acid was greatly reduced after cooking and drying ranging from $76.3\%$ to $79.7\%$ loss to that of tile fresh. The content of betaine shelved the same tendency as in total free amino acid while TMA slightly increased relating to TMAO decrease during broil-frying. Such nonvolatile organic acids as succinic, lactic, malic and fumaric acid were abundant in both fresh and broiled-dried samples whereas oxalic and pyruvic acid were poor. It is found that the taste compounds of broiled-dried Mytilus coruscus and Mytilus edulis were composed of amino acids as glycine, serine, alanine, glutamic acid, arginine, and betaine, TMAO, ADP, AMP, and organic acids such as succinic acid, lactic acid, malic acid and fumaric acid. No significant differences in the taste compounds between male and female as well as between Mytilus coruscus and Mytilus edulis was not observed.

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Identification of Aroma-Active Compounds in Korean Salt-Fermented Fishes by Aroma Extract Dilution Analysis 2. Aroma-Active Components in Salt-Fermented Shrimp on the Market (AEDA법에 의한 한국한 젓갈류의 Aroma-Active 성분의 구명 2. 시판 새우젓의 Aroma-Active 성분)

  • Cha, Yong-Jun;Kim, Hun;Jang, Sung-Min;Park, Jee-Young
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.2
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    • pp.319-325
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    • 1999
  • Volatile flavor compounds in Korean salt fermented shrimp on the market were analyzed by vacuum simultaneous distillation solvent extraction/gas chromatography/mass spectrometry/olfac tometry(V SDE/GC/MS/O) and aroma extract dilution anlaysis(AEDA). A total of 32 volatile com pounds were detected by GC/O analysis. Of these, 18 were positively identified, and composed of S containing compounds(5), aldehydes(4), ketones(3), N containing compounds(3), ester(1), alcohol(1) and aromatic hydrocarbon(1). Predominant odorants(Log3FD$\geq$4) in salt fermented shrimp were 2,3 butanedione(sour/buttery), 1 octen 3 one(earthy/mushroom like), dimethyl trisulfide(cooked cabbage /soy sauce like) and 2 acetylthiazole(grainy/nutty). Predominant free amino acids were aspartic acid, glutamic acid(sour and umami taste), arginine, methionine(bitter) and lysine(sweet and bitter) in evaluation of taste value.

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Determination of Optimum Operational Parameters on Early Warning Device for Early Detection of Taste and Odor in Drinking Water Supplies (상수원수 내 이취미 조기감지를 위한 조기경보장치의 최적운전인자 도출)

  • Kim, Young-Il;Bae, Byung-Uk;Ju, Dae-Sung
    • Journal of Korean Society of Water and Wastewater
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    • v.20 no.6
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    • pp.849-855
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    • 2006
  • Taste and odor (T&O) problems in drinking water supplies caused by eutrophication have become increasingly important because aesthetic qualities are the primary measures by which consumers estimate the quality of their drinking water. In order to overcome T&O problem, it is necessary to early detection method for T&O compounds before these compounds enter to water treatment plant. In this background, a early waming device for T&O compounds was developed and its performance tested under different operating condition. According to the experimental results on the adsorption efficiency of T&O compounds, when the raw water flowrate was 5 mL/min, the optimum stripping time and air flowrate were 5 hrs and 0.5 L/min, respectively. Comparison of activated carbon showed that foreign activated carbon was better than domestic activated carbon in terms of adsorption efficiency.

Taste Compounds of Fresh-Water Fishes 6. Taste Compounds of Korean Catfish Meat (담수어의 정미성분에 관한 연구 6. 메기의 정미성분)

  • YANG Syng-Taek;LEE Eung-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.16 no.3
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    • pp.202-210
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    • 1983
  • In order to elucidate the taste compounds of Korean catfish, Parasilurus asotus, free amino acids, nucleotides and their related compounds, organic bases, sugars, organic acids and minerals in the extracts of Korean catfish were analyzed, and then evaluated by sensory test of synthetic extract prepared on the basis of the analytical data. Taste panel assessments of synthetic extracts prepared with each extractive component omitted were carried out by a triangle difference test, and changes in taste profile were assessed. In free amino acid composition, glycine was dominant occupying $25\%$ of total free amino acids. The other abundant free amino acids were lysine, taurine and alanine. Judging from the result of analysis of nucleotides, IMP was dominant showing about $70\%$ of total nucleotides while ATP, ADP, AMP, inosine and hypoxanthine were low in content. Among organic bases, total creatinine was abundant and its nitrogen content occupied more than $50\%$ of the total extractive nitrogen. The amount of betaine was 18mg/100g and trace amount of trimethylamine and trimethylamine oxide were detected. The main organic acids were succinic, butyric, propionic and valeric acid. On the other hand, oxalic, fumaric, maleic, tartaric and citric acids were analyzed in trace. As for the sugars, glucose was found to be the most abundant monosaccharide. Extremely small amounts of fructoae, inositol were also detected and ribose and arabinose were trace in content. $K^+,\;Na^+,\;PO_{4}^{3-}$ and $Cl^-$ were found to be the major ions and small amount of $Ca^{2+}$ were defected. The synthetic extract, prepared with about 40 pure chemicals based on the analytical data satisfactorily revealed the natural taste of the original extract except slight difference in meaty taste and mildness. From the results of omission test the major components which contribute to produce the taste were serine, IMP, succinic acid and $PO_{4}^{3-}$.

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Component Characteristics of Canned Oyster Processing Waste Water as a Food Resource (식품소재로서 굴통조림 가공부산액의 성분 특성)

  • 김진수;허민수;염동민
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.2
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    • pp.299-306
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    • 2001
  • As a part of basic investigation for utilization of canned food processing by-products, a food components of the canned oyster processing waste water such as boiled and released water(BRW), wash water(WW) were investigated and compared with hot-water extracts from oyster. From the results of measuring heavy metal conte수, viable cells and coliform group, the canned oyster processing waste waters might not invoke health risk in using food resource. The contents of taste compounds (free amino acids, ATP related compounds, TMA (O) and total creatinine) of BRW and WW accounted for about 254% and 95%, respectively, in comparison with those of control (hot-water extract from oyster). The BRW showed a very high content of salt in comparing to the WW and control. In descending order, the values of whiteness index was WW, control and BRW. Sensory scores for color, oyster flavor intensity and saline taste were not significantly different between WW and control. But, BRW had the highest score in oyster flavor intensity, while had the lowest score in color and saline taste. But, the color and saline taste of BRW might be able to control by some pretreatment (concentration and drying in mild condition, desalination and recipe control etc). These results indicated that BRW and WW generated from various step during canned oyster processing could be a potential food resource by controlling of saline taste and color intensity.

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THE TASTE COMPOUNDS FERMENTED ACETES CHINENSIS (새우젓의 정미성분에 관한 연구)

  • CHUNG Seung-Yong;LEE Eung-Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.9 no.2
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    • pp.79-110
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    • 1976
  • In Korea fermented fish and shellfish have traditionally been favored and consumed as seasonings or further processed for fish sauce. Three major items in production quantity among more than thirty kinds which are presently available in the market are fermented anchovy, oyster and small shrimp. They are usually used as a seasoning mixture of Kimchi in order to provide a distinctive flavor. Fermented small shrimp, Acetes chinensis is most widely and largely used ana occupies an important position in food industry of this country. But no study on its taste compounds has been reported. This study was attempted to establish the basic data for evaluating taste compounds of fermented small shrimp. The changes of such compounds during fermentation as free amino acids, nucleotides and their related compounds, TMAO, TMA, and betaine were analysed. In addition, change in microflora during the fermentation under the halophilic circumstance was also investigated. The samples were prepared with three different salt contents of 20, 30 and $40\%$ to obtain the proper degree of fermentation at a controlled tempeature of $20{\pm}2^{\circ}C$. The results are summarized as follows: Volatile basic nitrogen increased rapidly until 108 days of fermentation and afterwards it tended to increase slowly. Amino nitrogen also increased rapidly until 43 days of fermentation and then increased slowly. Extract nitrogen increased and marked the maximum value at 72 day fermentation and then decreased slowly. ADP, AMP and IMP tended to degrade rapidly while hypoxanthine increased remarkably at 27 day fermentation but slightly decreased at 72 day fermentation. It is presumed that the characteristic flavor of fermented small shrimp might be attributed to the relatively higher content of hypoxanthine. In the free amino acid composition of fresh small shrimp abundant amino acids were proline, arginine, alanine, glycine, lysine, glutamic acid, leucine, valine and threonine in order. Such amino acids like serine, methionine, isoleucine, phenylalanine, aspartic acid, tyrosine and histidine were poor. In small shrimp extract, proline, arginine, alanine, glycine, lysine and glutamic acid were dominant holding $18.5\%,\;14.6\%,\;10.8\%,\;8.7\%,\;8.1\%\;and\;7.7\%$ of total free amino acids respectively. The total free amino acid nitrogen in fresh small shrimp was $63.9\%$ of its extract nitrogen. The change of free amino acid composition in the extract of small shrimp during fermentation was not observed. Lysine, alanine glutamic acid, proline, glycine and leucine were abundant in both fresh sample and fermented products. The increase of total free amino acids during 72 day fermentation reached approximately more than 2 times as compared with that of fresh sample and then decreased slowly. Fermented small shrimp with $40\%$ of salt was too salty to be commercial quality as the results of organoleptic test showed. It is found that 72 day fermentation with $20\%\;and\;30\%$ of salt gave the most favorable flavor. It is convinced that the characteristic flavor of fermented small shrimp was also attributed to such amino acids as lysine, proline, alanine, glycine and serine known as sweet compounds, as glutamic acid with meaty taste, and as leucine known as bitter taste. The amount of betaine increased during fermentation and reached the maximum at 72 day fermentation and then decreased slowly TMA increased while TMAO decreased during fermentation. The amount of TMAO nitrogen in fermented small shrimp was $200mg\%$ on moisture and salt free base. Betaine and TMAO known as sweet compounds were abundant in fermented small shrimp. It is supposed that these compounds could also play a role as important taste compounds of fermented small shrimp. At the initial stage of fermentation, Achromobacter, Pseudomonas, Micrococcus denitrificans which belong to marine bacteria were isolated. After 40 day fermentation, they disappeared rapidly while Halabacterium, Pediococcus, Sarcian, Micrococcus morrhuae and the yeasts such as Saccharomyces sp. and Torulopsis sp. dominated. It is concluded that the most important taste compounds of fermented small shrimp were amino acids such as lysine, proline, alanine, glycine, serine, glutamic acid, and leucine, betaine, TMAO and hypoxanthine.

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Studios on the Food from Fresh Water Fish(II)-The Taste Compounds in Meat of Crucian Carp, Skate$\cdot$Fish, Snake Head and Loaches- (담수어(淡水魚)의 식품학적(食品學的) 연구(硏究)(II)-붕어, 메기, 가물치 및 미꾸리의 맛성분(成分)-)

  • Sung, Nak-Ju;Shim, Ki-Hwan
    • Journal of Nutrition and Health
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    • v.14 no.2
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    • pp.80-86
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    • 1981
  • Crucian carp Carassius carassius L., Skate-fish Parasilurus asolus, snake head Ophicephalus argus and loaches Misgrunus anguillicaudatus have been esteemed as the tasty fresh water fish in Korea. However, a little has been studied on their taste compounds. Amino acids, nucleotides and their related compounds as the taste giving substance in the dorsal muscle of crucian carp, skate-fish, snake head and loaches were analyzed. Hypoxanthine (4.6-30.3 ${\mu}mole/g$, on dry base) was dominant among the nucleotide materials in the dorsal muscle of crucian carp, skate-fish, and snake head while IMP (12.8 ${\mu}mole/g$) was detected with the highest amount in loaches meat. IMP was also high in the muscle of skate-fish (13.5 ${\mu}mole/g$) and snake head (5.6 ${\mu}mole/g$). The other nucleotide materials, CMP, UMP, GMP, AMP, and inosine were present less than 2.0 ${\mu}mole/g$ in all the fish meat. The amino acid composition showed that glutamic acid and aspartic acid were the most abundant in the dorsal muscle of crucian carp, skate-fish, snake head and loaches. The analysis of free amino acids showed that histidine, lysine, glycine, and serine were the leading amino acids in the dorsal muscle of crucian carp, alanine, serine, and lysine were of skatefish, glycine, lysine, alanine, and serine were of snake head, while alanine, serine, and glycine were of loaches. Isoleucine and leucine were detected in trace amount in the muscle of skate-fish, snake head, and loaches. It is believed that alanine, Iysine, serine, glycine and histidine along with IMP and hypoxanthine may play an important role as the taste compounds in fresh water fish.

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