scholarly journals High Pressure Induced Effects on Free Amino Acid Generation in Mung Bean Sprouts during Preservation after Trigger Pressurization

2019 ◽  
Vol 25 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Daitaro Ishikawa ◽  
Ikumi Shigihara ◽  
Ran Nakai ◽  
Haruka Tamate ◽  
Yoshihiro Tsukada ◽  
...  
Keyword(s):  
High Pressure ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Mung Bean ◽  
Free Amino ◽  
Acid Generation ◽  
Mung Bean Sprouts ◽  
Bean Sprouts

Influence of high-pressure processing at different temperatures on free amino acid and volatile compound profiles of dry-cured ham

2019 ◽  
Vol 116 ◽  
pp. 49-56 ◽  
Author(s):  
C. Pérez-Santaescolástica ◽  
J. Carballo ◽  
E. Fulladosa ◽  
P.E.S. Munekata ◽  
P.C. Bastianello Campagnol ◽  
...  
Keyword(s):  
High Pressure ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Volatile Compound ◽  
High Pressure Processing ◽  
Dry Cured Ham ◽  
Different Temperatures

Evaluation of Chemical and Physical (High-Pressure and Temperature) Treatments To Improve the Safety of Minimally Processed Mung Bean Sprouts during Refrigerated Storage

2006 ◽  
Vol 69 (10) ◽  
pp. 2395-2402 ◽  
Author(s):  
MARINA MUÑOZ ◽  
BEGOÑA DE ANCOS ◽  
CONCEPCIÓN SÁNCHEZ-MORENO ◽  
M. PILAR CANO
Keyword(s):  
Hydrogen Peroxide ◽  
High Pressure ◽  
Response Surface Methodology ◽  
Mung Bean ◽  
Model System ◽  
Refrigerated Storage ◽  
Minimally Processed ◽  
High Pressure And Temperature ◽  
Mung Bean Sprouts ◽  
Bean Sprouts

The objective of this study was to compare the effects of combined high hydrostatic pressure and temperature treatments with different chemical sanitation treatments (water, sodium hypochlorite, and hydrogen peroxide) on the microbiological properties of mung bean sprouts. In a first study, the raw product was subjected to several combined high-pressure and temperature treatments for calculating a mathematical model by a response surface methodology. The number of pressure-temperature (150 to 400 MPa; 20 to 40°C) combinations was limited to 10. In addition, a model system consisting of mung bean sprout juice was inoculated with Listeria monocytogenes (CECT 4032). Microbial inactivation with this model system was also investigated by a response surface methodology. The highest aerobic mesophilic bacteria and L. monocytogenes inactivation was achieved at maximum pressure and temperature (5.5 and 1.8 log cycles, respectively). In a second study, the effect of five different processing lines on the microbial load reduction of minimally processed mung bean sprouts during refrigerated storage was studied. All treatments reduced the initial population of aerobic mesophilic bacteria and fecal coliforms, with the physical treatment of 400 MPa and 40°C being the most effective, showing initial reductions of 5.8 and 7.8 log CFU/g, respectively. Recovery of bacteria from sprouts treated under these conditions was not observed during storage. However, the sprouts that received washing treatments with water, sodium hypochlorite, and hydrogen peroxide exhibited increases in aerobic mesophilic and fecal coliform counts after 3 days of storage at 4°C.

Texture, proteolysis and viable lactic acid bacteria in commercial Cheddar cheeses treated with high pressure

2004 ◽  
Vol 71 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Cheryl Wick ◽  
Uwe Nienaber ◽  
Olga Anggraeni ◽  
Thomas H Shellhammer ◽  
Polly D Courtney
Keyword(s):  
High Pressure ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Content ◽  
Cheddar Cheese ◽  
High Pressure Processing ◽  
Pressure Treatment ◽  
Cheese Ripening ◽  
Cell Counts

High pressure processing was investigated for controlling Cheddar cheese ripening. One-month- or 4-month-old Cheddar cheeses were subjected to pressures ranging from 200 to 800 MPa for 5 min at 25 °C. The number of viable Lactococcus lactis (starter) and Lactobacillus (nonstarter) cells decreased as pressure increased. Subsequent storage of the control and pressure-treated cheeses at 10 °C caused viable cell counts to change in some cases. Free amino acid content was monitored as an indicator of proteolysis. Cheeses treated with pressures [ges ]400 MPa evolved free amino acids at significantly lower rates than the control. No acceleration in free amino acid development was observed at lower pressures. Pressure treatment did not accelerate the rate of textural breakdown compared with the non-pressure treated control. On the contrary, pressure treatment at 800 MPa reduced the time-dependent texture changes. Results indicate that high pressure may be useful in arresting Cheddar cheese ripening.

The effect of steaming on the free amino acid contents and antioxidant activity of ginseng

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
EJ Cho ◽  
XL Piao ◽  
MH Jang ◽  
SY Park ◽  
SW Kwon ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Contents

Tronchuda cabbage (Brassica oleracea L. var. costata DC) leaf free amino acid profile

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
BM Silva ◽  
AP Oliveira ◽  
DM Pereira ◽  
C Sousa ◽  
RM Seabra ◽  
...  
Keyword(s):  
Amino Acid ◽  
Brassica Oleracea ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Profile ◽  
Tronchuda Cabbage ◽  
Brassica Oleracea L

Evaluation of plasma free amino acid and carnitine levels in patients with cesarean scar pregnancy

2020 ◽  
Vol 23 ◽  
Author(s):  
Omer Tammo ◽  
Hacer Uyanikoglu ◽  
İsmail Koyuncu
Keyword(s):  
Amino Acid ◽  
Pregnant Women ◽  
Free Amino Acid ◽  
Free Amino ◽  
Plasma Concentrations ◽  
Myometrial Invasion ◽  
Controlled Study ◽  
Control Group ◽  
Cesarean Scar Pregnancy ◽  
Cesarean Scar

Aim and Objective: This study aimed to explore the plasma free amino acid (FAA) and carnitine levels in pregnant women with cesarean scar pregnancy (CSP), and to compare them with those of healthy pregnant women. Materials and Methods: This prospective and randomized controlled study was conducted in patients admitted to Harran University Medical Faculty Hospital Obstetrics Clinic between January 2018 and January 2019. A total of 60 patients were included in the study, and the patients were divided into two groups: CSP group (n = 30) and healthy pregnant group as the control group (n = 30). The blood samples were taken from the participants between 7 - 12 weeks of gestation. Twentyseven carnitines and their esters and 14 FAAs were analysed by liquid chromatography – mass spectrometry (LC-MS/MS). Results: The mean plasma concentrations of some carnitines, including C2, C5, C5-OH, C5-DC, C6, C8-1, C12, C14, C14- 1, C14-2, C16, C16-1, C18, and C18-1 were significantly higher in CSP group than in the control group. However, other carnitines, including C0, C3, C4, C4-DC, C5-1, C6-DC, C8, C8-DC, C10, C10-1, C18-1-OH, and C18-2 were similar in both groups. The plasma levels of some FAAs, including Methyl Glutaryl, Leu, Met, Phe, Arg, Orn, and Glu values were significantly higher in CSP group than in the control group. However, there was no statistically significance in other FAA levels, including Val, Asa, Tyr, Asp, Ala, Cit, and Gly between the two groups. Additionally, Pearson’s correlation analysis showed that there were significantly positive correlations between many FAA and carnitine values. Conclusion: Since several plasma carnitine and FAA levels were higher in CSP group than in the control group, we think that scar pregnancy increases metabolic need for myometrial invasion. Also, we think that these results may be useful in clinical practice for CSP diagnosis.

Plasma-Free Amino Acid Profiling of Nasal Polyposis Patients

2020 ◽  
Vol 22 (9) ◽  
pp. 657-662 ◽  
Author(s):  
Mustafa Celik ◽  
Alper Şen ◽  
İsmail Koyuncu ◽  
Ataman Gönel
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Nasal Polyposis ◽  
Amino Acid Profile ◽  
Healthy Control Group ◽  
Control Group ◽  
Healthy Control ◽  
History Of

Aim and Objective:: To determine the mechanisms present in the etiopathogenesis of nasal polyposis. It is not clear whether amino acids contribute in a causal way to the development of the disease. Therefore, the aim of this study was to determine the plasma-free amino acid profile in patients with nasal polyposis and to compare the results with a healthy control group. Materials and Methods:: This was a prospective controlled study that took place in the Otolaryngology Department at the Harran University Faculty of Medicine between April 2017 and April 2018. Plasmafree amino acid profile levels were studied in serum samples taken from a patient group and a healthy control group. Patients who were diagnosed with bilateral diffuse nasal polyposis and were scheduled for surgical interventions were included in this study. Individuals whose age, gender, and body mass index values were compatible with that of the patient group and who did not have any health problems were included in the control group. All the participants whose levels of plasma-free amino acid were thought to be affected by one or more of the following factors were excluded from the study: smoking and alcohol use, allergic rhinitis presence, the presence of acute or chronic sinusitis, a history of endoscopic sinus surgery, unilateral nasal masses, a history of chronic drug use, systemic or topical steroid use in the last three months for any reason, and liver, kidney, hematological, cardiovascular, metabolic, neurological, or psychiatric disorders or malignancies. Results: In patients with nasal polyposis, 3-methyl histidine (3-MHIS: nasal polyposis group (ng) = 3.22 (1.92 – 6.07); control group (cg) = 1.21 (0.77 – 1.68); p = 0.001); arginine (arg: ng = 98.95 (70.81 – 117.75); cg = 75.10 (54.49 – 79.88); p = 0.005); asparagine (asn: ng = 79.84 (57.50 – 101.44); cg = 60.66 (46.39 – 74.62); p = 0.021); citrulline (cit: ng = 51.83 (43.81 – 59.78); cg = 38.33 (27.81 – 53.73); p = 0.038); cystine (cys: ng = 4.29 (2.43 – 6.66); cg = 2.41 (1.51 – 4.16); p = 0.019); glutamic acid (glu: ng = 234.86 (128.75 – 286.66); cg = 152.37 (122.51 – 188.34); p = 0.045); histidine (his: ng = 94.19 (79.34 – 113.99); cg = 74.80 (62.76 – 98.91); p = 0.018); lysine (lys: ng = 297.22 (206.55 – 371.25); cg = 179.50 (151.58 – 238.02); p = 0.001); ornithine (ng = 160.62 (128.36 – 189.32); cg = 115.91 (97.03 – 159.91); p = 0.019); serine (ser: ng = 195.15 (151.58 – 253.07); cg = 83.07 (67.44 – 92.44); p = 0.001); taurine (tau: ng = 74.69 (47.00 – 112.13); cg = 53.14 (33.57 – 67.31); p = 0.006); tryptophan (trp: ng = 52.31 (33.81 – 80.11); cg = 34.44 (25.94 – 43.07); p = 0.005), homocitrulline (ng = 1.75 (1.27 – 2.59); cg = 0.00 (0.00 – 0.53); p = 0.001); norvaline (ng = 6.90 (5.61 – 9.18); cg = 4.93 (3.74 – 7.13); p = 0.021); argininosuccinic acid (ng = 14.33 (10.06 – 25.65); cg = 12.22 (5.77 – 16.87) p = 0.046); and plasma concentrations were significantly higher than in the healthy control group (p <0.05). However, the gamma-aminobutyric acid (gaba: ng = 0.16 (0.10 – 0.24); cg = 0.21 (0.19 – 0.29); p = 0.010) plasma concentration was significantly lower in the nasal polyposis group than in the healthy control group. Conclusion: In this study, plasma levels of 15 free amino acids were significantly higher in the nasal polyposis group than in the healthy control group. A plasma level of 1 free amino acid was found to be significantly lower in the nasal polyposis group compared to the healthy control group. Therefore, it is important to determine the possibility of using the information obtained to prevent the recurrence of the condition and to develop effective treatment strategies. This study may be a milestone for studies of this subject. However, this study needs to be confirmed by further studies conducted in a larger series.

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