scholarly journals Producing Drink like Grafted Milk from Chickpeas and Evaluation of its Qualitative Properties

2020 ◽  
Vol 10 (03) ◽  
pp. 374-377
Author(s):  
Ibtihal Ismail Muhammad Al-Ani
Keyword(s):  
Room Temperature ◽  
Extraction Efficiency ◽  
Ph Value ◽  
Bacterial Number ◽  
Qualitative Properties ◽  
Product Density ◽  
Ph Values ◽  
Extraction Volume ◽  
Refrigerator Temperature ◽  
Soda Solution

The present study aimed to study the possibility of producing a drink that looks like grafted milk by using chickpeas and evaluate its physical, chemical, microbial, and sensory properties. The result showed the superiority of F treatment (soaking 100 grams of chickpeas at the refrigerator temperature 4ºC for 12 hours) over the rest seven treatments in extraction efficiency, which was 70%, while, it was 50.5% in H treatment (soaking 100 grams of chickpeas in the heated water at 60ºC for 30 minutes). The highest value of the product density was after water and flavorings addition in the D treatment (soaking 100 grams chickpeas in 0.05 soda solution at 60ºC for 30 minutes), and it was 0.97 g cm-3, compared with the lowest density 0.57 g cm-3 in A treatment (soaking 100 grams chickpeas in 0.05 soda solution at room temperature 25ºC for 12 hours). pH values were highest in A treatment compared with the other treatments, and its value was 7.66 in the 1st and 2nd day, after dissolving in a refrigerator at 4ºC, and then, for 5 minutes at room temperature 30ºC. The lowest value in the D treatment was 6.45 on the 1st day, and 6.87 on the 2nd day in the G treatment. On the 3rd day, the highest pH value was 7.13 in the D treatment, and the lowest value 6.79 was in the E treatment. pH highest value was 6.2 on the 4th day in A treatment. From the last results, it may be concluded that F treatment was the best in extraction efficiency, the final product density, and less total bacterial number, after dissolving for 5 days at refrigerator temperature 4ºC, and then, at room temperature 30ºC for 3 and 48 hours incubation. The best extraction volume and pH were in A treatment.

Effect of pH Value on Structural and Optical Properties of Transparent Nano-Crystalline TiO2 Films Prepared by Sol-Gel Dip-Drive Coating

2013 ◽  
Vol 678 ◽  
pp. 80-85 ◽  
Author(s):  
Krishnasamy Sakthivel ◽  
T. Venkatachalam
Keyword(s):  
Ab Initio ◽  
Room Temperature ◽  
Ph Value ◽  
Sol Gel ◽  
Structural And Optical Properties ◽  
Glass Substrates ◽  
Ph Values ◽  
Nano Crystalline ◽  
Crystalline Nature ◽  
Deposited Films

Thin films of TiO2 have been deposited on well cleaned glass substrates by Sol-Gel dip-drive coating technique. The films have been prepared at three different pH values (1, 3.5 & 9) of Sol and annealed in muffle furnace at 550°C for one hour and are allowed to cool to room temperature. The films were characterized by XRD, EDAX, SEM and UV-Vis Spectrophotometer. The as deposited films were found to be amorphous in nature. The annealed films exhibit anatase in crystalline structure. The EDAX results have shown that all the films are maintained with TiO2 in composition. The XRD results reveal that they are nano-crystalline in nature and the crystalline nature increases with pH of the Sol. The transmittance and absorbance spectra have shown that the films are transparent and band gap of the films are of the order of 3.2eV. The ab initio studies of TiO2 (using GGA) was performed with Vienna ab initio Simulation package and the band structure and effective masses of the electrons and holes were determined.

Pemanfaatan Hasil Samping Fermentasi Belimbing Wuluh (Asam Sunti) dalam Pengolahan Ikan

2018 ◽  
Vol 3 (2) ◽  
pp. 351-356
Author(s):  
Weny Weny ◽  
Rasdiansyah Rasdiansyah ◽  
Novia Mehra Erfiza
Keyword(s):  
Soluble Protein ◽  
Room Temperature ◽  
Storage Time ◽  
Ph Value ◽  
Block Design ◽  
Total Acid ◽  
Soaking Time ◽  
Ph Values ◽  
Randomized Block Design ◽  
And Storage

Abstrak. Sampai saat ini belum ada penelitian lebih lanjut mengenai pemanfaatan hasil samping dari produk asam sunti. Tujuan penelitian ini untuk melihat pengaruh perendaman ikan di dalam air asam sunti dan penyimpanannya pada suhu ruang terhadap karakteristik ikan. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial dengan 2 faktor yaitu faktor waktu perendaman (W), yang terdiri dari 3 taraf (W1 : 30 detik, W2 : 5 menit, W3 : 10 menit) dan lama penyimpanan (S), yang terdiri dari 2 taraf (S1 : 0 jam, S2 : 2 jam). Hasil penelitian menunjukkan bahwa karakteristik air asam sunti pada uji pH memiliki rataan yaitu 1,27, total asam 49% dan total bakteri asam laktat  5,1×104 CFU/gram. Nilai pH ikan setelah direndam air asam sunti 5,22-5,65 dengan rataan 5,43 dan nilai protein terlarut berkisar antara 18,42-18,74% dengan rataan 18,74%.Dari penelitian didapatkan bahwa waktu perendaman (W) berpengaruh nyata (P≤0,05) terhadap nilai protein terlarut dari ikan namun berpengaruh tidak nyata (P0,05) terhadap nilai pH ikan, uji deskriptif aroma dan tekstur ikan. Lama penyimpanan (S) berpengaruh sangat nyata (P≤0,01) terhadap nilai pH ikan setelah perendaman namun berpengaruh tidak nyata (P0,05) terhadap uji deskriptif aroma dan tekstur ikan. Interaksi waktu perendaman dengan lama penyimpanan berpengaruh nyata (P≤0,05) terhadap nilai pH ikan namun berpengaruh tidak nyata terhadap uji deskriptif aroma dan tekstur ikan.Waktu perendaman ikan di dalam air asam sunti selama 10 menit dapat menghambat kenaikan pH ikan selama penyimpanan sampai 2 jam. Semakin lama perendaman ikan di dalam air asam sunti maka semakin tinggi protein terlarut dari ikan.  Abstrack. Therefore, this study was conducted to see the effect of soaking the fish in asam sunti water and its storage at room temperature on the characteristics of the fish. This study uses a randomized block design factorial with 2 factors: soaking time (W), consisting of 3 levels (W1: 30 seconds, W2: 5 minutes, W3: 10 minutes) and storage time (S), consisting of 2 levels ( S1: 0 hours, S2: 2 hours). The results showed pHof asam sunti water is 1.27,  total acid is 49% and lactic acid bacteria has  of  5.1 × 104 CFU / gram and the soaked fish has pH values ranged from 5.22 to 5.65 with the average of 5.43 and soluble protein values ranged from 18.42 to 18.74% with the average 18.74%.The results indicated that the soaking time (W) has effect significantly to the value of soluble protein (P≤0,05) of fish but iteffect not significantly (P 0.05) on pH value of fish, descriptive test the of aroma and texture of the fish. Storage time (S) effect significantly (P≤0,01) to pH value of fish after soaking but it effectnot significantly (P 0.05) to the descriptive test of  aroma and texture of the fish. Interaction withsoaking time and storage (WxS) effect significantly (P≤0,05) to pH value of fish but it effect to not significantly the descriptive test of aroma and texture of the fish.Soaking time the fish in water for 10 minutes sunti can inhibit increasing in the pH of the fish during storage up to 2 hours. The longer soaking time of the fish in the asam sunti water, the higher sunti acid soluble proteins from value.

Electrical and optical properties of well-dispersed MWCNTs/PVA nanocomposites under different pH conditions

2018 ◽  
Vol 32 (4) ◽  
pp. 442-453 ◽  
Author(s):  
Emad AM Farrag ◽  
Rami A Abdel-Rahem ◽  
SS Ibrahim ◽  
Ayman S Ayesh
Keyword(s):  
Room Temperature ◽  
Ph Value ◽  
Poly Vinyl Alcohol ◽  
Electrical And Optical Properties ◽  
Multiwalled Carbon ◽  
Casting Technique ◽  
Ph Values ◽  
Current Voltage ◽  
Optimum Ph ◽  
Ph Conditions

Series of polymer nanocomposites films consisting of pretreated multiwalled carbon nanotubes (PT-MWCNTs) and poly (vinyl alcohol) (PVA) were prepared at room temperature. The MWCNTs were initially pretreated with 1.0 M sulfuric acid (PT-MWCNTs) and then allowed to disperse in aqueous solutions at different pH values (2–14). It was found that the dispersion of the PT-MWCNTs is a pH dependent. The best PT-MWCNTs dispersion was obtained at pH = 10. Films of PT-MWCNTs/PVA, at this optimum pH-value, were then prepared by casting technique at different PT-MWCNTs weight fractions. The resulted PT-MWCNTs/PVA films were characterized through the direct visualization, Fourier transform infrared, and morphology test. Besides, current–voltage and direct current electrical conductivity for PT-MWCNTs/PVA nanocomposites at 60°C showed that the conductivity mechanism was ohmic and the percolation threshold was around 0.8 wt% PT-MWCNTs. Optical results showed that PT-MWCNTs are homogeneously distributed in the neat PVA and optical gap is significantly decreased from 4.40 to 2.96 eV.

STUDY ON QUALITY CHANGES OF LEMEA DURING STORAGE IN VARIOUS TYPES OF TEMPERATURE AND PACKAGING MATERIALS

2013 ◽  
Vol 3 (1) ◽  
pp. 51-60
Author(s):  
Kurnia Herlina Dewi ◽  
Yessy Rosalina ◽  
Sutra Firansyah
Keyword(s):  
Room Temperature ◽  
Storage Temperature ◽  
Ph Value ◽  
Observation Point ◽  
Packaging Materials ◽  
Quality Changes ◽  
Refrigerator Temperature ◽  
The Difference ◽  
And Storage ◽  
Temperature Storage

Lemea is a traditional food from Rejang tribes that needs improvement in packaging so that the product can compete with other packaged foods. A study to get the proper packaging to maintain lemea’s quality using various types of packaging materials and storage temperatures is necessary to be conducted. The objective of this study is to examine effect of various types of packaging materials and storage temperature on quality changes of lemea. The study designed using CRD with 2 factors and 3 replications. Type of packaging material used in this research is LDPE plastic with a thickness of 0:01 mm, OPP / PP multilayer plastic with a thickness of 0.05 mm and PETE plastic bottles with a thickness of 1:25 mm; storage temperature used is room temperature at 27-32 °C and refrigerator temperature at 12-15 °C. Parameters measured were changes in water content, pH value, the number of colonies of microbes and organoleptic (color, scent, shape and overall acceptance attributes of lemea) on lemea that stored for 28 days with the observation point on day 7, 14, 21 and 28. Various of packaging materials of lemea are LDPE plastic, OPP / PP multilayer plastic, and PETE plastic bottles showed significant effect on moisture content, pH, TPC, and organoleptic in room temperature storage at 27-32 °C but it had no significant effect in the refrigerator temperature storage at 12-15 °C. The difference in storage temperature affects the occurrence of deviation or alteration of lemea quality.

Experimental Study of Coagulation Treatment of the Arsenic-Containing Rural Drinking Groundwater

2012 ◽  
Vol 610-613 ◽  
pp. 2197-2202
Author(s):  
Jing Liu ◽  
Hua Yang ◽  
Yan Zuo ◽  
Zhi Min Ren ◽  
De Jun Bian
Keyword(s):  
Experimental Study ◽  
Drinking Water ◽  
Room Temperature ◽  
Arsenic Removal ◽  
Ph Value ◽  
Experimental Results ◽  
Ph Values ◽  
Neutral Ph ◽  
Removal Of Arsenic ◽  
Sedimentation Time

The arsenic-containing rural drinking groundwater was treated by coagulation method in the paper. It was studied that the varieties and dosages of coagulants, pH value and sedimentation time have an effect on removal of arsenic. The experimental results indicated that the rate of arsenic removal is able to reach 95.6% at room temperature and under the condition of neutral pH values, 20 mg of Fe2(SO4)3 as coagulant and 1 h of sedimentation time. The content of arsenic in the treated drinking groundwater can be up to the current national hygiene standards of rural drinking water (<0.05mg /L).

Separation and Recovery of Copper (II), Nickel (II) from Simulated Plating Wastewater by Solvent Extraction Using Lix984

2011 ◽  
Vol 365 ◽  
pp. 252-259 ◽  
Author(s):  
Li Qing Li ◽  
Hong Zhong
Keyword(s):  
Solvent Extraction ◽  
Nickel Alloy ◽  
Extraction Efficiency ◽  
Ph Value ◽  
Single Stage ◽  
Environment Pollution ◽  
Ph Values ◽  
Alloy Plating ◽  
Optimal Ph ◽  
Plating Wastewater

The process of solvent extraction was applied to separate and recover Cu2+ and Ni2+ from plating wastewater from copper and nickel alloy plating process, because there are abundant Cu2+ and Ni2+. And the influence parameters have been investigated. Lix984 was chosen as the extractant due to it has good performance to extract metals from the water. The results showed the separation of Cu2+ and Ni2+ from sulphate medium can be realized by adjusting pH value with the help of Lix984, And more, the optimal pH values for extracting Cu2+and Ni2+ are 4 and 10, respectively. The maximal extraction efficiency for Cu2+ and Ni2+ can reach above to 90.6% and 93.5% by single-stage extraction. The recovered Cu2+ and Ni2+ were stripped in 170g/L and 200g/L H2SO4 medium, respectively. And the stripping of Cu2+ and Ni2+ are >99.2% and >99.4%, respectively. It can be successfully applied to the field of plating wastewater, decreasing the environment pollution from Cu2+ and Ni2+ and providing a kind of new copper and nickel resource.

scholarly journals Appearance of Platelet-Clumping Substance after Acidification of Plasma

Blood ◽  
1968 ◽  
Vol 31 (3) ◽  
pp. 348-357 ◽  
Author(s):  
HIROH YAMAZAKI ◽  
HIROSHI MURASE ◽  
TATSUO SHIMAMOTO ◽  
TAKIO SHIMAMOTO
Keyword(s):  
Calcium Ions ◽  
Standard Error ◽  
Room Temperature ◽  
Ph Value ◽  
Platelet Rich Plasma ◽  
Final Concentration ◽  
Ringer’S Solution ◽  
Ph Values ◽  
Edta Plasma ◽  
Ph Range

Abstract 1. The pH values of heparinized plasma from ten normal rabbits were from 7.53 to 7.80. The average pH and standard error was 7.69 ± 0.03. These plasmas did not show platelet-clumping activity when exposed to the platelet-saline suspension from the same or other normal rabbits. The platelet-clumping substance was not observed in all ten cases after alkalinization of the plasma to pH values ranging from 8.32 to 9.40. On the contrary, immediately after acidification of the plasmas, the platelet-clumping substance appeared at pH values from 4.90 to 6.82 at room temperature. The range of the lower pH value, in which the platelet-clumping substance was observed, was 4.90-5.60 (5.15 ± 0.07 in average) and the upper range was 5.95-6.82 (6.27 ± 0.12 in average). The pH range at which the strongest clumping of platelets appeared was 5.22-5.95 (5.61 ± 0.07 in average). The platelet-clumping substance did not disappear after the pH of the acidified plasma was reneutralized to the original value. 2. No clumping was found after the addition of citrated, oxalated, EDTA-plasma or serum even when they were acidified. After the pH value of the citrated, oxalated or EDTA-plasma was changed from 4.85 ± 0.39 to 7.55 ± 0.03 and in the presence of calcium ions (10 mM.), platelet-clumping activity was observed. After the addition of citrate (0.38 percent in final concentration), oxalate (0.2 percent in final concentration), or EDTA (0.1 percent in final concentration) to the heparinized plasma the platelet-clumping substance did not disappear. In the case of serum, the platelet-clumping activity did not appear after the pH changes. 3. The platelet-clumping substance in the acidified plasma was heat-labile; it was detected after BaSO4-adsorption and defibrination; it was stable in storage at 4 C., and it was not dialyzable against Ringer’s solution for 72 hours. It induced platelet clumping not only in citrated platelet-rich plasma but also in the platelet-saline suspension. 4. The properties of the platelet-clumping substance in the acidified plasma were compared with that of substances known to have platelet-clumping activity and the experimental evidences showing the differences to ADP, thrombin, ADP-cofactor and thrombocyte agglutinating factors have been detailed.

Experimental Study of Adsorption Treatment of the Arsenic-Containing Rural Drinking Groundwater

2013 ◽  
Vol 295-298 ◽  
pp. 1129-1134
Author(s):  
Jing Liu ◽  
Hua Yang ◽  
Yan Zuo ◽  
Zhi Min Ren ◽  
De Jun Bian
Keyword(s):  
Experimental Study ◽  
Drinking Water ◽  
Room Temperature ◽  
Arsenic Removal ◽  
Ph Value ◽  
Adsorption Method ◽  
Adsorption Time ◽  
Ph Values ◽  
Adsorption Treatment ◽  
Removal Of Arsenic

The arsenic-containing rural drinking groundwater was treated by adsorption method in the paper. It was studied that the varieties and dosages of adsorbents, pH value and adsorption time have an effect on removal of arsenic. The experimental results indicated that the rate of arsenic removal is able to reach 91.39% at room temperature and under the condition of neutral pH values, 2.0 g of zeolite as adsorbent and 1 h of adsorption time. The content of arsenic in the treated drinking groundwater can be up to the current national hygiene standards of rural drinking water (<0.05mg /L).

Effects of pH Value on the Structures and Optical Properties of Bi2S3 Thin Films

2010 ◽  
Vol 434-435 ◽  
pp. 397-399
Author(s):  
Jian Feng Huang ◽  
Yan Wang ◽  
Li Yun Cao ◽  
Hui Zhu ◽  
Xie Rong Zeng
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Room Temperature ◽  
Light Emission ◽  
Ph Value ◽  
Solution Ph ◽  
Oriented Growth ◽  
Cathodic Electrodeposition ◽  
Ph Values ◽  
Effects Of Ph

Bismuth sulfide (Bi2S3) is an important semiconductor material, which has wide applications in thermoelectricity, electronics, photoelectricity and infrared spectroscopy. Bi2S3 thin films have been deposited on ITO substrates through a cathodic electrodeposition approach at room temperature. The as-deposited thin films were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM) and photoluminescence spectrum (PL). The effects of solution pH values on the structures and optical properties of the thin films were particularly investigated. Results show that uniform Bi2S3 thin films with oriented growth along (240) direction can be obtained at the solution pH value range from 4.5 to 6.5. The as-prepared thin films exhibit stable blue-green photoluminescence properties under the ultraviolet light excitation at room temperature. With the increase of the solution pH values, the crystallization of the Bi2S3 thin films improves while the grain size of the obtained thin films decreases and the light emission intensity of the thin films decreases.

Comparative Labelling and Biokinetic Studies of 99mTc-EDTA(Sn) and 99mTc-DTPA(Sn)

1977 ◽  
Vol 16 (01) ◽  
pp. 30-35 ◽  
Author(s):  
N. Agha ◽  
R. B. R. Persson
Keyword(s):  
Complex Formation ◽  
Significant Influence ◽  
Room Temperature ◽  
Ph Value ◽  
Maximum Activity ◽  
Reduction Step ◽  
Labelling Yield ◽  
Different Temperatures ◽  
Kinetics Of

SummaryGelchromatography column scanning has been used to study the fractions of 99mTc-pertechnetate, 99mTcchelate and reduced hydrolyzed 99mTc in preparations of 99mTc-EDTA(Sn) and 99mTc-DTPA(Sn). The labelling yield of 99mTc-EDTA(Sn) chelate was as high as 90—95% when 100 μmol EDTA · H4 and 0.5 (Amol SnCl2 was incubated with 10 ml 99mTceluate for 30—60 min at room temperature. The study of the influence of the pH-value on the fraction of 99mTc-EDTA shows that pH 2.8—2.9 gave the best labelling yield. In a comparative study of the labelling kinetics of 99mTc-EDTA(Sn) and 99mTc- DTPA(Sn) at different temperatures (7, 22 and 37°C), no significant influence on the reduction step was found. The rate constant for complex formation, however, increased more rapidly with increased temperature for 99mTc-DTPA(Sn). At room temperature only a few minutes was required to achieve a high labelling yield with 99mTc-DTPA(Sn) whereas about 60 min was required for 99mTc-EDTA(Sn). Comparative biokinetic studies in rabbits showed that the maximum activity in kidneys is achieved after 12 min with 99mTc-EDTA(Sn) but already after 6 min with 99mTc-DTPA(Sn). The long-term disappearance of 99mTc-DTPA(Sn) from the kidneys is about five times faster than that for 99mTc-EDTA(Sn).

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