Francis G. Giesbrecht

Works (36)

Updated: March 10th, 2025 12:14

2016 article

Sampling dried figs for aflatoxin – Part 1: variability associated with sampling, sample preparation, and analysis

Ozer, H., Basegmez, H. I. O., Whitaker, T. B., Slate, A. B., & Giesbrecht, F. G. (2016, December 12). World Mycotoxin Journal.

By: H. Ozer*, H. Basegmez *, T. Whitaker n, A. Slate n & F. Giesbrecht n

author keywords: sampling variability; sample preparation variability; analytical variability
topics (OpenAlex): Mycotoxins in Agriculture and Food; Listeria monocytogenes in Food Safety; Pesticide Residue Analysis and Safety
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2015 article

Variability and distribution among sample test results when sampling unprocessed oat lots for ochratoxin A

Whitaker, T. B., Slate, A. B., Nowicki, T. W., & Giesbrecht, F. G. (2015, March 26). World Mycotoxin Journal.

By: T. Whitaker n, A. Slate n, T. Nowicki & F. Giesbrecht n

author keywords: sampling plan; maximum level; buyer's risk; seller's risk; OC curve
topics (OpenAlex): Mycotoxins in Agriculture and Food; Wheat and Barley Genetics and Pathology; Pesticide Residue Analysis and Safety
Source: Web Of Science
Added: August 6, 2018

2015 article

Variability and distribution among sample test results when sampling unprocessed wheat lots for ochratoxin A

Whitaker, T. B., Slate, A. B., Nowicki, T. W., & Giesbrecht, F. G. (2015, December 21). World Mycotoxin Journal.

By: T. Whitaker n, A. Slate n, T. Nowicki & F. Giesbrecht n

author keywords: sampling plan; maximum level; buyer's risk; seller's risk; OC curve
topics (OpenAlex): Mycotoxins in Agriculture and Food; Wheat and Barley Genetics and Pathology; Pesticide Residue Analysis and Safety
Source: Web Of Science
Added: August 6, 2018

2012 article

Autolytic Degradation of Skipjack Tuna during Heating As Affected by Initial Quality and Processing Conditions

Stagg, N. J., Amato, P. M., Giesbrecht, F., & Lanier, T. C. (2012, January 17). Journal of Food Science.

By: N. Stagg  n, P. Amato n, F. Giesbrecht n & T. Lanier n

author keywords: fish; meat; myosin; proteolysis; texture
MeSH headings : Animals; Calpain / metabolism; Cathepsins / metabolism; Electrophoresis, Polyacrylamide Gel / methods; Food Handling / methods; Hot Temperature; Hydrogen-Ion Concentration; Muscle, Skeletal / metabolism; Proteolysis; Seafood; Tuna
topics (OpenAlex): Meat and Animal Product Quality; Bee Products Chemical Analysis; Identification and Quantification in Food
TL;DR: The kinetic data presented here can be used to optimize processing conditions for skipjack tuna canning to minimize textural degradation and optimize quality. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2010 article

Comparing the performance of sampling plans that use a single regulatory limit based upon total aflatoxins to sampling plans that use dual limits based upon B1 and total aflatoxins

Whitaker, T., Slate, A., Adams, J., Birmingham, T., & Giesbrecht, F. (2010, February 1). World Mycotoxin Journal.

By: T. Whitaker*, A. Slate*, J. Adams*, T. Birmingham* & F. Giesbrecht*

author keywords: almonds; aflatoxin; export market; sampling plans; single limits; dual limits
topics (OpenAlex): Pesticide Residue Analysis and Safety; Mycotoxins in Agriculture and Food
Source: Web Of Science
Added: August 6, 2018

2008 article

Sampling and Analytical Variability Associated with the Determination of Total Aflatoxins and Ochratoxin A in Powdered Ginger Sold As a Dietary Supplement in Capsules

Trucksess, M. W., Whitaker, T. B., Weaver, C. M., Slate, A., Giesbrecht, F. G., Rader, J. I., & Betz, J. M. (2008, December 23). Journal of Agricultural and Food Chemistry.

By: M. Trucksess*, T. Whitaker*, C. Weaver*, A. Slate*, F. Giesbrecht*, J. Rader*, J. Betz *

author keywords: Sampling; analytical uncertainty; aflatoxins; ochratoxin A; ginger capsules; dietary supplements
MeSH headings : Aflatoxins / analysis; Analysis of Variance; Capsules / chemistry; Chromatography, High Pressure Liquid / methods; Chromatography, High Pressure Liquid / standards; Chromatography, High Pressure Liquid / statistics & numerical data; Consumer Product Safety; Dietary Supplements / analysis; Ginger / chemistry; Ochratoxins / analysis
topics (OpenAlex): Mycotoxins in Agriculture and Food; Pesticide Residue Analysis and Safety; Wheat and Barley Genetics and Pathology
TL;DR: The U.S. Food and Drug Administration is studying the need to monitor dietary supplements for mycotoxins such as total aflatoxins and ochratoxin A and the total variability associated with measuring AF and OTA in powdered ginger was partitioned into bottle-to-bottle, within bottle, and analytical variances. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Sampling almonds for aflatoxin, Part II: Estimating risks associated with various sampling plan designs

Journal of AOAC International, 90(3), 778–785.

By: T. Whitaker, A. Slate, J. Hurley & F. Giesbrecht

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Sampling hazelnuts for aflatoxin: Effect of sample size and accept/reject limit on reducing the risk of misclassifying lots

Journal of AOAC International, 90(4), 1028–1035.

By: G. Ozay, F. Seyhan, A. Yilmaz, T. Whitaker, A. Slate & F. Giesbrecht

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Sampling almonds for aflatoxin, part I: Estimation of uncertainty associated with sampling, sample preparation, and analysis

Journal of AOAC International, 89(4), 1027–1034.

By: T. Whitaker, A. Slate, M. Jacobs, J. Hurley, J. Adams & F. Giesbrecht

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Sampling hazelnuts for aflatoxin: Uncertainty associated with sampling, sample preparation, and analysis

Journal of AOAC International, 89(4), 1004–1011.

By: G. Ozay, F. Seyhan, A. Yilmaz, T. Whitaker, A. Slate & F. Giesbrecht

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Evaluation of sampling plans to detect Cry9C protein in corn flour and meal

Journal of AOAC International, 87(4), 950–960.

By: T. Whitaker, M. Trucksess, F. Giesbrecht, A. Slate & F. Thomas

Source: NC State University Libraries
Added: August 6, 2018

2004 article

Oil, Sugar, and Starch Characteristics in Peanut Breeding Lines Selected for Low and High Oil Content and Their Combining Ability

Isleib, T. G., Pattee, H. E., & Giesbrecht, F. G. (2004, April 27). Journal of Agricultural and Food Chemistry.

By: T. Isleib n, H. Pattee n & F. Giesbrecht n

author keywords: general combining ability; GCA; specific combining ability; SCA; maternal effect; reciprocal effect
MeSH headings : Arachis / chemistry; Arachis / genetics; Breeding; Carbohydrates / analysis; Peanut Oil; Plant Oils / analysis; Plant Oils / chemistry; Seeds / chemistry; Selection, Genetic; Starch / analysis
topics (OpenAlex): Peanut Plant Research Studies; Agricultural pest management studies; Plant Genetic and Mutation Studies
TL;DR: Screening of 584 accessions identified two lines (PI 269723 and PI 315608) with high and two (Robusto 2 and Robusto 3) with low oil contents, each pair differing in sugar content, suggesting influences of cytoplasmic genes on those traits. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 article

Planning, Construction, and Statistical Analysis of Comparative Experiments

Giesbrecht, F. G., & Gumpertz, M. L. (2004, March 18). Wiley Series in Probability and Statistics.

By: F. Giesbrecht* & M. Gumpertz*

topics (OpenAlex): Optimal Experimental Design Methods
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Estimating deoxynivalenol in shelled corn barge lots by measuring deoxynivalenol in corn screenings

Journal of AOAC International, 86(6), 1187–1192.

By: T. Whitaker, J. Richard, F. Giesbrecht, A. Slate & N. Ruiz

Source: NC State University Libraries
Added: August 6, 2018

2002 article

Defoliation Intensity Effects on Season‐Long Dry Matter Distribution and Nutritive Value of Tall Fescue

Burns, J. C., Chamblee, D. S., & Giesbrecht, F. G. (2002, July 1). Crop Science.

By: J. Burns n, D. Chamblee n & F. Giesbrecht n

topics (OpenAlex): Ruminant Nutrition and Digestive Physiology; Turfgrass Adaptation and Management; Plant and fungal interactions
TL;DR: The approach used to estimate DGR and associated nutritive value changes throughout the growing season resulted in useful data that can be applied in developing intensive grazing management practices. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2002 article

Effect of High-Oleic Trait and Paste Storage Variables on Sensory Attribute Stability of Roasted Peanuts

Pattee, H. E., Isleib, T. G., Moore, K. M., Gorbet, D. W., & Giesbrecht, F. G. (2002, November 9). Journal of Agricultural and Food Chemistry.

By: H. Pattee n, T. Isleib n, K. Moore n, D. Gorbet n & F. Giesbrecht n

author keywords: parentage; roasted peanut attribute; sweet attribute; bitter attribute; Arachis hypogaea; genotypes
MeSH headings : Arachis / chemistry; Arachis / genetics; Breeding; Food Handling; Food Preservation; Genotype; Hot Temperature; Humans; Inbreeding; Oleic Acid / analysis; Sensation; Taste; Temperature
topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications; Soybean genetics and cultivation
TL;DR: It was observed that some high-oleic lines derived from the Sunrunner cultivar have consistently higher predicted breeding values for roasted peanut attribute than Sunrunner itself, and differential rates of change in sensory attributes were found in different background genotypes, suggesting that the comparison of high- and normal-olesic lines should be made in common background genotype as well as in common production and postharvest environments. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 article

Prediction of Parental Genetic Compatibility to Enhance Flavor Attributes of Peanuts

Pattee, H. E., Isleib, T. G., Giesbrecht, F. G., & Cui, Z. (2002, August 7). ACS Symposium Series.

By: H. Pattee n, T. Isleib n, F. Giesbrecht n & Z. Cui n

Ed(s):

topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications; Advanced Chemical Sensor Technologies
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2002 article

Sampling Wheat for Deoxynivalenol

Whitaker, T. B., Hagler, W. M., Giesbrecht, F. G., & Johansson, A. S. (2002, January 1). Advances in Experimental Medicine and Biology.

By: T. Whitaker*, W. Hagler n, F. Giesbrecht n & A. Johansson n

Ed(s):

MeSH headings : Algorithms; Analysis of Variance; Calibration; Quality Control; Reproducibility of Results; Trichothecenes / analysis; Triticum / chemistry
topics (OpenAlex): Mycotoxins in Agriculture and Food; Wheat and Barley Genetics and Pathology; Pesticide Residue Analysis and Safety
TL;DR: The variability associated with testing wheat for deoxynivalenol (DON) was measured using a 0.454 kg sample, a Romer mill, 25 g of comminuted subsample and the Romer Fluoroquant analytical method. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2002 article

Selection of Alternative Genetic Sources of Large-Seed Size in Virginia-Type Peanut:  Evaluation of Sensory, Composition, and Agronomic Characteristics

Pattee, H. E., Isleib, T. G., Gorbet, D. W., & Giesbrecht, F. G. (2002, July 20). Journal of Agricultural and Food Chemistry.

By: H. Pattee n, T. Isleib n, D. Gorbet n & F. Giesbrecht n

author keywords: Arachis hypogaea L.; roasted peanut; sweet; bitter; astrinderit; yield; grade; meat
MeSH headings : Agriculture; Arachis / chemistry; Arachis / genetics; Carbohydrates / analysis; Hot Temperature; Peanut Oil; Plant Oils / analysis; Seeds / anatomy & histology; Seeds / chemistry; Starch / analysis; Taste
topics (OpenAlex): Peanut Plant Research Studies; Agricultural pest management studies; Coconut Research and Applications
TL;DR: Among the nine large-seeded lines tested in this study, three appear to have greater potential for use as parents: 86x45B-10-1-2- 2-b2-B, UF714021, and X90053, both derived from Japan Jumbo. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Distribution among sample test results when testing shelled corn lots for fumonisin

Journal of AOAC International, 84(3), 770–776.

By: T. Whitaker, W. Hagler, A. Johansson, F. Giesbrecht & M. Trucksess

Source: NC State University Libraries
Added: August 6, 2018

2001 article

Novel Quantitative Assays for Estimating the Antimicrobial Activity of Fresh Garlic Juice

Unal, R., Fleming, H. P., Mcfeeters, R. F., Thompson, R. L., Breidt, F., & Giesbrecht, F. G. (2001, February 1). Journal of Food Protection.

By: R. Unal, H. Fleming n, R. Mcfeeters n, R. Thompson n, F. Breidt n & F. Giesbrecht n

MeSH headings : Bacteria / drug effects; Bacteria / growth & development; Colony Count, Microbial; Diffusion; Dose-Response Relationship, Drug; Food Preservation / methods; Garlic / chemistry; Immunodiffusion; Methyl Methanesulfonate / pharmacology; Microbial Sensitivity Tests; Plant Extracts / pharmacology; Plants, Medicinal; Reference Values; Time Factors
topics (OpenAlex): Garlic and Onion Studies; Pineapple and bromelain studies; Nephrotoxicity and Medicinal Plants
TL;DR: Novel agar diffusion and broth dilution assays were developed for quantitatively estimating the antimicrobial activity of fresh garlic juice and bacteria found to be inhibited by garlic juice included two gram-positive and five gram-negative species. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 article

Peanut Roast Color and Sensory Attribute Relationships

Pattee, H. E., Sanders, T. H., Isleib, T. G., & Giesbrecht, F. G. (2001, January 4). ACS Symposium Series.

By: H. Pattee n, T. Sanders n, T. Isleib n & F. Giesbrecht n

Ed(s):

topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Sampling grain shipments to detect genetically modified seed

Journal of AOAC International, 84(6), 1941–1946.

By: T. Whitaker, L. Freese, F. Giesbrecht & A. Slate

Source: NC State University Libraries
Added: August 6, 2018

2001 article

Variability associated with the official USDA sampling plan used to inspect export wheat shipments for Tilletia controversa spores

Whitaker, T. B., Wu, J., Peterson, G. L., Giesbrecht, F. G., & Johansson, A. S. (2001, December 1). Plant Pathology.

By: T. Whitaker n, J. Wu*, G. Peterson *, F. Giesbrecht n & A. Johansson n

author keywords: dwarf bunt; sampling; Tilletia controversa; variability; wheat
topics (OpenAlex): Turfgrass Adaptation and Management; Pesticide Residue Analysis and Safety; Mycotoxins in Agriculture and Food
TL;DR: The variability among the 16 TC test sample results, as measured by the standard deviation, was found to increase with TC concentration and the functional relationship was approximately linear in a full-log plot and regression analysis was used to determine the coefficients of the regression equation. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 article

Investigations into Genotypic Variations of Peanut Carbohydrates

Pattee, H. E., Isleib, T. G., Giesbrecht, F. G., & McFeeters, R. F. (2000, February 19). Journal of Agricultural and Food Chemistry.

By: H. Pattee n, T. Isleib n, F. Giesbrecht n & R. McFeeters n

author keywords: Arachis hypogaea L.; sugars; genetic variation; environmental variation
MeSH headings : Arachis / genetics; Carbohydrates / analysis; Genotype; Humans; Taste
topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications; Agricultural pest management studies
TL;DR: The observed high genotypic variation in carbohydrate components is similar to the high genotype variation observed for the sweetness attribute in roasted peanuts, which raises the question regarding possible interrelationships. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Performance of three pneumatic probe samplers and four analytical methods used to estimate aflatoxins in bulk cottonseed

Journal of AOAC International, 83(5), 1247–1251.

By: D. Park, T. Whitaker, F. Giesbrecht & H. Njapau

Source: NC State University Libraries
Added: August 6, 2018

2000 article

Relationships of Sweet, Bitter, and Roasted Peanut Sensory Attributes with Carbohydrate Components in Peanuts

Pattee, H. E., Isleib, T. G., Giesbrecht, F. G., & McFeeters, R. F. (2000, February 19). Journal of Agricultural and Food Chemistry.

By: H. Pattee n, T. Isleib n, F. Giesbrecht n & R. McFeeters n

author keywords: Arachis hypogaea L.; flavor; carbohydrate; components; roasted peanut; sweet; bitter
MeSH headings : Arachis / chemistry; Carbohydrates / analysis; Humans; Taste
topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications; Agricultural pest management studies
TL;DR: Within two market-types it is possible to improve the efficiency of selection for sweetness and roasted peanut quality by assaying for total carbohydrates, and the greatest efficiency would occur in the fastigiate market-type and then the runner. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Sampling, sample preparation, and analytical variability associated with testing wheat for deoxynivalenol

Journal of AOAC International, 83(5), 1285–1292.

By: T. Whitaker, W. Hagler, F. Giesbrecht & A. Johansson

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Testing shelled corn for aflatoxin, Part I: Estimation of variance components

Journal of AOAC International, 83(5), 1264–1269.

By: A. Johansson, T. Whitaker, W. Hagler, F. Giesbrecht, J. Young & D. Bowman

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Testing shelled corn for aflatoxin, Part II: Modeling the observed distribution of aflatoxin test results

Journal of AOAC International, 83(5), 1270–1278.

By: A. Johansson, T. Whitaker, F. Giesbrecht, W. Hagler & J. Young

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Testing shelled corn for aflatoxin, Part III: Evaluating the performance of aflatoxin sampling plans

Journal of AOAC International, 83(5), 1279–1284.

By: A. Johansson, T. Whitaker, F. Giesbrecht, W. Hagler & J. Young

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Performance of sampling plans to determine aflatoxin in farmers' stock peanut lots by measuring aflatoxin in high-risk- grade components

Journal of AOAC International, 82(2), 264–270.

By: T. Whitaker, W. Hagler & F. Giesbrecht

Source: NC State University Libraries
Added: August 6, 2018

1999 article

Sensory Attribute Variation in Low-Temperature-Stored Roasted Peanut Paste

Pattee, H. E., Giesbrecht, F. G., & Isleib, T. G. (1999, May 11). Journal of Agricultural and Food Chemistry.

By: H. Pattee n, F. Giesbrecht n & T. Isleib n

author keywords: flavor intensity; flavor-fade; sensory interactions; stability; staling
MeSH headings : Arachis; Cooking; Food Preservation / methods; Freezing; Humans; Smell; Taste
topics (OpenAlex): Peanut Plant Research Studies; Coconut Research and Applications; Advanced Chemical Sensor Technologies
TL;DR: Fruity and stale interactions with roasted peanut and lability of roasted peanut were shown to be three separate and identifiable effects on roasted peanut. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Estimating aflatoxin in farmers' stock peanut lots by measuring aflatoxin in various peanut-grade components

Journal of AOAC International, 81(1), 61–67.

By: T. Whitaker, W. Hagler, F. Giesbrecht, J. Dorner, F. Dowell & R. Cole

Source: NC State University Libraries
Added: August 6, 2018

1998 article

Investigations of the Problems of Assessing Aflatoxin Levels in Peanuts

Giesbrecht, F. G., & Whitaker, T. B. (1998, June 1). Biometrics.

By: F. Giesbrecht n & T. Whitaker*

author keywords: aflatoxin concentration; compound gamma; modeling; negative binomial
topics (OpenAlex): Genetics and Plant Breeding; Mycotoxins in Agriculture and Food; Spectroscopy and Chemometric Analyses
TL;DR: A number of probability distributions that have been used to model the occurrence of aflatoxin in peanuts are compared and two distributions, the compound gamma and the negative binomial, are shown to have special appeal in that both can be justified by reasoning from the fundamental biological and stochastic processes that generate the a Flatoxin. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Variability associated with testing shelled corn for fumonisin

Journal of AOAC International, 81(6), 1162–1168.

By: T. Whitaker, M. Trucksess, A. Johansson, F. Giesbrecht, W. Hagler & D. Bowman

Source: NC State University Libraries
Added: August 6, 2018

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