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

Collaborative Study of a Rapid Method for Extraction of Light Filth from Corn Meal, Rye, Pumpernickel, and Buckwheat Flour

1971 ◽  
Vol 54 (4) ◽  
pp. 903-905
Author(s):  
Mary T Miller
Keyword(s):  
Rapid Method ◽  
Collaborative Study ◽  
Mineral Oil ◽  
Corn Meal ◽  
Soxhlet Extractor ◽  
Water Washing ◽  
Yellow Corn ◽  
Alcohol Water ◽  
Buckwheat Flour

Abstract A rapid method based on product defatting in a Soxhlet extractor, hydrolysis in acid-alcohol, water washing, and, finally, separation of light filth in mineral oil has been developed for the separation of light filth from white and yellow corn meal, cracked wheat, rye, pumpernickel, and buckwheat flour. Collaborative results are satisfactory for all products tested; the method has been adopted as official first action.

Collaborative Study of a New Method for the Extraction of Light Filth from White Flour

1972 ◽  
Vol 55 (3) ◽  
pp. 514-515
Author(s):  
Mary T Miller
Keyword(s):  
Acid Hydrolysis ◽  
Collaborative Study ◽  
Mineral Oil ◽  
New Method ◽  
White Flour

Abstract A new method for the separation of light filth from white flour is based on an autoclave-acid hydrolysis, followed by separation of light fdth elements with mineral oil in a Corning or Kilborn separator. This method is rapid and gives clean papers and good recoveries. The method has been adopted as official first action, to replace 40.045 and 40.046 for extraction of light filth from white flour.

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.

Rapid Method for Extraction of Light Filth from Corn Meal, Rye, Pumpernickel, and Buckwheat Flour

1970 ◽  
Vol 53 (4) ◽  
pp. 723-725
Author(s):  
Mary T Miller
Keyword(s):  
Rapid Method ◽  
Ethyl Alcohol ◽  
Mineral Oil ◽  
Corn Meal ◽  
Soxhlet Extractor ◽  
Alcohol Medium ◽  
Buckwheat Flour

Abstract A rapid method for the separation of light filth from a variety of high bran flours consists of a defatting procedure in a Soxhlet extractor, followed by separation of the filth elements with mineral oil in a HCl-ethyl alcohol medium. The proposed method gives clean papers and good recoveries and has no critically timed steps.

Determination of Amino Acids in Feeds: Collaborative Study

1994 ◽  
Vol 77 (6) ◽  
pp. 1362-1402 ◽  
Author(s):  
Cynthia R Llames ◽  
Johannes Fontaine
Keyword(s):  
Amino Acids ◽  
Acid Hydrolysis ◽  
Hydrobromic Acid ◽  
Collaborative Study ◽  
Performic Acid ◽  
Acid Oxidation ◽  
Sodium Metabisulfite ◽  
Hydrolysis Method ◽  
Relative Standard

Abstract A total of 28 laboratories (including authors’ laboratories) participated in a collaborative study for determination of amino acids in feeds using 3 complementary procedures. Each collaborator analyzed 5 blind duplicate samples of feed and ingredients used in the poultry industry. The amount of amino acids in these materials ranged from 0.10 to 8.50%. Twenty-three laboratories conducted analyses using performic acid oxidation with acid hydrolysis—sodium metabisulfite method, 16 laboratories performed analyses using performic acid oxidation with acid hydrolysis—hydrobromic acid method, and 15 laboratories used acid hydrolysis method. The repeatability relative standard deviation values for all amino acids for all 3 procedures ranged from 1.1 to 5.6% for broiler finisher feed, 1.1 to 4.73% for starter feed, 1.3 to 9.6% for corn, 0.8 to 3.96% for fishmeal, and 0.8 to 12.7% for poultry meal. The reproducibility relative standard deviation values for all amino acids ranged from 3.71 to 19.80% for broiler finisher feed, 4.1 to 16.93% for starter feed, 4.4 to 28.2% for corn, 3.46 to 18.96% for fishmeal, and 3.73 to 24.1% for poultry meal. The performic acid oxidation with acid hydrolysis—sodium metabisulfite and hydrobromic acid methods, and acid hydrolysis method for determination of amino acids in feeds have been adopted first action by AOAC INTERNATIONAL.

Collaborative Studies of Rapid Methods for the Separation of Extraneous Materials from Whole and Degerminated Corn Meal, Prepared Mustard, and Soy Flour

1968 ◽  
Vol 51 (3) ◽  
pp. 522-524
Author(s):  
Mary T Miller
Keyword(s):  
Acid Hydrolysis ◽  
Soy Flour ◽  
Corn Meal ◽  
Rapid Methods ◽  
Collaborative Studies ◽  
Extraneous Material

Abstract Rapid methods based on acid hydrolysis have been developed for the separation of extraneous material from whole and degerminated corn meal, prepared mustard, and soy flour. Collaborative results by the methods were satisfactory for mustard and corn meal, and the methods are recommended for adoption as official, first action. Recovery of extraneous material from soy flour was variable and further study is needed.

Collaborative Study of a New Method for the Extraction of Light Filth from Soy Flour

1972 ◽  
Vol 55 (1) ◽  
pp. 60-61
Author(s):  
Russell G Dent ◽  
Michael Brunson
Keyword(s):  
Petroleum Ether ◽  
Collaborative Study ◽  
Enzymatic Digestion ◽  
Mineral Oil ◽  
New Method ◽  
Soy Flour ◽  
Wet Sieving ◽  
Official Procedure

Abstract Collaborative results are presented for a proposed method for light filth extraction from soy flour. The method involves dispersion in saturated NaCl and isopropanol, wet sieving, and extraction with hot mineral oil from alcohol in a percolator. Average per cent recoveries of spiked elytral fragments and rodent hairs were 88.2 and 65.5, respectively, by the proposed method compared to 64.5 and 56, respectively, by official procedure 40.053. The existing procedure for soy flour is time-consuming because it requires an overnight enzymatic digestion and a hazardous petroleum ether defatting step. The proposed method eliminates both of these steps arid the analysis can be completed in 1–2 hr. It is recommended that the method be adopted as official first action to replace 40.053.

Comparison of AACC and AOAC Methods for Extraneous Materials in Flour

1965 ◽  
Vol 48 (3) ◽  
pp. 554-558
Author(s):  
O’Dean L Kurtz ◽  
Thomas H McCormack
Keyword(s):  
Acid Hydrolysis ◽  
Control Procedure ◽  
Appreciable Difference ◽  
Hydrolysis Method ◽  
Separatory Funnel ◽  
Specialized Technique ◽  
Aoac Method ◽  
Filter Papers

Abstract Recovery of extraneous materials in flour by the AACC acid hydrolysis method is equal and perhaps superior to that obtained from the AOAC method (36.025(a)). There is no appreciable difference between the results obtained with the Wildman trap flask or a separatory funnel, although the latter requires less specialized technique. The.Kilborn funnel and the soil percolator have been found satisfactory. The AACC method is considerably less time-consuming and thus more suited to routine control procedure, is more easily standardized, and results in filter papers that are clean and easy to examine.

Extraction of Light Filth from Rice Flours, Extruded Rice Products, and Rice Paper: Collaborative Study

1982 ◽  
Vol 65 (5) ◽  
pp. 1086-1088
Author(s):  
Russell G Dent ◽  
◽  
J R Bryce ◽  
B C Cox ◽  
D D Hughes ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Collaborative Study ◽  
Rice Flour ◽  
Mineral Oil ◽  
Water Phase ◽  
Single Extraction ◽  
New Methods ◽  
Rice Flours ◽  
Wet Sieving

Abstract Two new methods were developed for the extraction of rodent hairs and insect fragments from rice products: one for rice flour and one for extruded rice products and rice paper. A 100 g sample of rice flour was extracted with mineral oil-40% isopropanol, followed by a water phase as needed for additional cycles. For extruded rice products and rice paper, a 225 g sample of each was initially extracted as above, followed by a single extraction with mineral oil-20% isopropanol. Both methods used an acid hydrolysis pretreatment followed by wet sieving and a percolator extraction. Average rodent hair recoveries were 77.8% for rice flour and 82.2% for extruded rice products and rice paper. Average insect fragment recoveries were 89.6% for rice flour and 91.9% for extruded rice products and rice paper. Both methods were adopted official first action.

Extraction of Light Filth from Raw and Processed Wheat Germ

1970 ◽  
Vol 53 (3) ◽  
pp. 560-562
Author(s):  
Andree L Roaf ◽  
Paris M Brickey ◽  
Russell G Dent
Keyword(s):  
Acid Hydrolysis ◽  
Wheat Germ ◽  
Collaborative Study ◽  
Mineral Oil ◽  
Isopropanol Solution ◽  
Wet Sieving

Abstract A method developed for the extraction of light filth from raw and processed wheat germ utilizes chloroform defatting and acid hydrolysis followed by wet sieving. Light filth is extracted with mineral oil from a hot ethanol or isopropanol solution. The collaborative study resulted in 90, 89, and 84% average recoveries of spike insect fragments, rodent hairs, and adult insects, respectively. The method is recommended for adoption as official first action.

Sign in / Sign up

Export Citation Format

Share Document