scholarly journals Comparison of cyanide content in arbila beans (Phaseolus lunatus l) of East Nusa Tenggara using picrate and acid hydrolysis methods

2021 ◽  
Vol 924 (1) ◽  
pp. 012031
Author(s):  
A R Pramitha ◽  
H Harijono ◽  
S N Wulan
Keyword(s):  
Acid Hydrolysis ◽  
T Test ◽  
Phaseolus Lunatus ◽  
Free Cyanide ◽  
Acetone Cyanohydrin ◽  
Hydrolysis Method ◽  
Total Level ◽  
Colorimetric Procedure ◽  
Cyanide Content

Abstract Arbila beans contains cyanogenic compounds in the form of linamarin (cyanoglucosides), acetone cyanohydrin, and free cyanide, all together constitute total cyanide content. The objective of this study was to compare the cyanide content in arbila beans analyzed by picrate and acid hydrolysis methods. Picrate method measures total cyanide only. Cyanide content was identified by using a picrate paper, which turned into yellow. The absorbance was measured by a spectrophotometer at 510 nm. Acid hydrolysis method measures cyanide in arbila beans in the form of linamarin, acetone cyanohydrin, and free cyanide. Linamarin wa hydrolyzed in H3PO4 solution. Estimated cyanide levels was measured by using a colorimetric procedure. Data was analyzed using Independent sample t-test (SPSS v.16). The results showed that, there was no difference in the total level of cyanide in both methods. Total cyanide measured by picrate and acid hydrolysis method was 2705.17 ppm and 2693.29 ppm, respectively. In addition, the three forms of cyanide content were as follows: linamarin 926.22 ppm, cyanohydrin 556.01 ppm, and free cyanide 1211.06 ppm. Based on the results, both methods can be used for total cyanide analysis. To determine the form of cyanide other than total cyanide, it is recommended to use the acid hydrolysis method.

Preparation of κ-carra-oligosaccharides with microwave assisted acid hydrolysis method

2015 ◽  
Vol 14 (2) ◽  
pp. 345-349 ◽  
Author(s):  
Guangsheng Li ◽  
Xia Zhao ◽  
Youjing Lv ◽  
Miaomiao Li ◽  
Guangli Yu
Keyword(s):  
Acid Hydrolysis ◽  
Hydrolysis Method ◽  
Microwave Assisted

Total Solids and Ether Extract in Fish and Other Marine Products

1963 ◽  
Vol 46 (4) ◽  
pp. 746-748
Author(s):  
H M Risley
Keyword(s):  
Acid Hydrolysis ◽  
Ether Extract ◽  
Total Solids ◽  
Hydrolysis Method ◽  
Canned Fish ◽  
Marine Products ◽  
Frozen Fish

Abstract The first action modified Babcock method for crude fat in canned fish, 18.013, was studied collaboratively on 2 samples of canned fish and 2 samples of frozen fish. The results were compared with those by the official acid hydrolysis method, 18.012. Nine analysts, representing 5 different laboratories, cooperated in the study. The results show that the modified Babcock method has about the same degree of reliability as the acid hydrolysis method. It was recommended that the method be made official, after some slight changes in the wording.

Rapid Method for Separation of Extraneous Materials from Whole and Degerminated Corn Meal, Prepared Mustard, and Soy Flour

1967 ◽  
Vol 50 (3) ◽  
pp. 505-509
Author(s):  
Mary T Miller
Keyword(s):  
Acid Hydrolysis ◽  
Rapid Method ◽  
Chloride Solution ◽  
Collaborative Study ◽  
Mineral Oil ◽  
Soy Flour ◽  
Corn Meal ◽  
Hydrolysis Method ◽  
Separatory Funnel ◽  
Time Required

Abstract A rapid method, based on acid hydrolysis in the presence of mineral oil, has been developed to separate extraneous materials from whole and degerminated corn meal, prepared mustard, and soy flour. Corn meal may be first examined for rodent excreta by method 36.032 and then examined for light filth, or it may be analyzed directly for light filth by the acid hydrolysis method. Soy flour is prepared for analysis by solubilizing the protein in dilute sodium chloride solution in the presence of mineral oil. The Kilborn separatory funnel is used with all 3 products. The proposed method improves recoveries of insect fragments by 13—34% and rodent hair recoveries hy 25—54%. Analyst time required for actual assay is reduced by at least onethird. The method will be subjected to collaborative study

Practical Limitations of the Dilute Acid Hydrolysis Method for Solubilizing Meat and Bone Meal Protein

2017 ◽  
Vol 5 (12) ◽  
pp. 11652-11659 ◽  
Author(s):  
Matthew Essandoh ◽  
Rafael A. Garcia ◽  
Christine M. Nieman ◽  
Lorelie P. Bumanlag ◽  
George J. Piazza ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Dilute Acid ◽  
Meat And Bone Meal ◽  
Bone Meal ◽  
Dilute Acid Hydrolysis ◽  
Hydrolysis Method ◽  
Meal Protein

scholarly journals Pemanfaatan Ubi Jalar (Ipomoea Babatas, L.) Menjadi Sirup Glukosa Dengan Metode Hidrolisis Asam

2020 ◽  
Vol 4 (1) ◽  
pp. 21-27
Author(s):  
Lukhi Mulia Shitophyta
Keyword(s):  
Acid Hydrolysis ◽  
Sweet Potato ◽  
Glucose Production ◽  
Raw Material ◽  
Sweet Potatoes ◽  
Hydrolysis Time ◽  
Glucose Content ◽  
Hydrolysis Method ◽  
Glucose Syrup

Sweet potato (Ipomea Babatas, L.) is a tuber plant that contains carbohydrates, calcium, and starch. Besides being consumed as food, sweet potato can be used as a raw material for making glucose syrup. The study aimed to investigate the effect of hydrolysis time and HCl volume on glucose production. The starch was extracted from sweet potatoes then deposited for an hour. The glucose syrup production was carried out by acid hydrolysis method at 100°C. The results showed that the highest glucose content of 62.76% was obtained at 30 minutes hydrolysis time and 15 ml HCl volume. The smallest glucose content is obtained at the longest hydrolysis time. The greater the volume of HCl, the smaller the glucose content.

scholarly journals Intensifying the synthesis of starch nanoparticles using ultrasound-assisted acid hydrolysis method

2021 ◽  
Author(s):  
Vikas S Hakke ◽  
Shirish Sonawane ◽  
Sivakumar Manickam ◽  
Sami Boufi ◽  
Dipak V Pinjari ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Acid Concentration ◽  
Ultrasound Irradiation ◽  
Starch Granules ◽  
Surface Charges ◽  
Hydrolysis Method ◽  
Starch Nanoparticles ◽  
Ultrasound Assisted ◽  
Size And Morphology ◽  
Time Required

Abstract In the present study, an intensified approach for the synthesis of starch nanoparticles (SNPs) was demonstrated by using ultrasound-assisted acid hydrolysis method. The conventional acid hydrolysis for the synthesis of SNPs was intensified using ultrasound. The overall time required to convert starch granules to SNPs in the conventional acid hydrolysis method (48 h) was significantly reduced to 45 min by simultaneous acid hydrolysis and ultrasound irradiation. The acid concentration was found to be an important parameter for obtaining the desired size and morphology of the synthesized SNPs. The variation in the surface charges associated with the SNPs was confirmed through measuring their zeta potential. These potential charges on the surface of SNPs induce crystal growth among the synthesized nanoparticles. The irregular crystal morphology at higher acid concentration clearly shows SNPs' attachment with each other by coalescence. The higher crystallinity for SNPs was observed at low acid concentration; however, the lower acid concentration (0.5 M) leads to the smaller particle size of SNPs from 40 to 60 nm, with the overall yield of 23%. The proposed ultrasound method is more efficient and reproducible for the synthesis of SNPs for various applications.

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