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Evaluation of Host-Derived Lactobacillus Probiotics and Plant-Derived Antimicrobials Against Salmonella Using In Vitro, In Vivo, and Metabolomic Approaches and Capturing Consumer Perceptions on Poultry Using Focus Group Discussions.
Evaluation of Host-Derived Lactobacillus Probiotics and Plant-Derived Antimicrobials Against Salmonella Using In Vitro, In Vivo, and Metabolomic Approaches and Capturing Consumer Perceptions on Poultry Using Focus Group Discussions.
상세정보
- 자료유형
- 학위논문(국외)
- 기본표목-개인명
- 표제와 책임표시사항
- Evaluation of Host-Derived Lactobacillus Probiotics and Plant-Derived Antimicrobials Against Salmonella Using In Vitro, In Vivo, and Metabolomic Approaches and Capturing Consumer Perceptions on Poultry Using Focus Group Discussions.
- 발행, 배포, 간사 사항
- 발행, 배포, 간사 사항
- 형태사항
- 264 p.
- 일반주기
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 일반주기
- Advisor: Kollanoor Johny, Anup.
- 학위논문주기
- Thesis (Ph.D.)--University of Minnesota, 2023.
- 요약 등 주기
- 요약Poultry products are an integral part of diets globally, contributing significantly to animal protein consumption. However, it is also a notable vector for foodborne salmonellosis. Thus, investigations into interventions to mitigate their presence in poultry and poultry products are warranted. This dissertation explores the use of autochthonous, turkey-derived Lactobacillus salivarius UMNPBX2 and Lactobacillus ingluviei UMNPBX19 probiotics (LB), and plant-derived antimicrobials (PDA), trans-cinnamaldehyde (TC), citral (CIT), and lemongrass essential oil (LG) against multidrug-resistant Salmonella Heidelberg (SH) in turkey poults and ground turkey. GC-MS-based untargeted metabolomics was utilized to explore the impact of SH challenge and treatment application on the metabolic interactions within the ceca and meat. As consumers are critical stakeholders within the industry, focus groups were conducted to gain comprehensive insights into their attitudes toward poultry and perceptions of contemporary production methods. The results indicated that LB and TC can reduce SH in the ceca, and their combination resulted in additive effects. Accumulation of metabolites such as lactose and cholic acid were associated with SH colonization and may confer advantages to SH luminal expansion. Oppositely, lactic acid and compounds with potentially deleterious effects on SH were more abundant in the treatment groups. PDAs reduced SH in ground turkey throughout storage, with TC yielding the most significant reduction in SH. TC-treated patties also exhibited the most negligible change in metabolite composition throughout the five-day storage period. Consistently high cinnamic acid concentrations may contribute to observed antimicrobial activity. Metabolites indicative of microbial activity, like glucose and hypoxanthine, were elevated in the untreated positive control. Poultry consumption is driven by convenience, affordability, and health considerations. Misconceptions and skepticism towards labels appear to be rooted in unfamiliarity with regulations. These studies reveal the utility of LB and PDAs in mitigating SH in turkeys and their products. Additionally, engaging and educating consumers may be a prerequisite to acceptance of the associated costs, thereby alleviating the financial burden on producers and potentially catalyzing the adoption of more sustainable production practices.
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 부출표목-단체명
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 원문정보보기
MARC
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■040 ▼aMiAaPQ▼cMiAaPQ
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■1001 ▼aDewi, Grace.
■24510▼aEvaluation of Host-Derived Lactobacillus Probiotics and Plant-Derived Antimicrobials Against Salmonella Using In Vitro, In Vivo, and Metabolomic Approaches and Capturing Consumer Perceptions on Poultry Using Focus Group Discussions.
■260 ▼a[S.l.]▼bUniversity of Minnesota. ▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a264 p.
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Kollanoor Johny, Anup.
■5021 ▼aThesis (Ph.D.)--University of Minnesota, 2023.
■520 ▼aPoultry products are an integral part of diets globally, contributing significantly to animal protein consumption. However, it is also a notable vector for foodborne salmonellosis. Thus, investigations into interventions to mitigate their presence in poultry and poultry products are warranted. This dissertation explores the use of autochthonous, turkey-derived Lactobacillus salivarius UMNPBX2 and Lactobacillus ingluviei UMNPBX19 probiotics (LB), and plant-derived antimicrobials (PDA), trans-cinnamaldehyde (TC), citral (CIT), and lemongrass essential oil (LG) against multidrug-resistant Salmonella Heidelberg (SH) in turkey poults and ground turkey. GC-MS-based untargeted metabolomics was utilized to explore the impact of SH challenge and treatment application on the metabolic interactions within the ceca and meat. As consumers are critical stakeholders within the industry, focus groups were conducted to gain comprehensive insights into their attitudes toward poultry and perceptions of contemporary production methods. The results indicated that LB and TC can reduce SH in the ceca, and their combination resulted in additive effects. Accumulation of metabolites such as lactose and cholic acid were associated with SH colonization and may confer advantages to SH luminal expansion. Oppositely, lactic acid and compounds with potentially deleterious effects on SH were more abundant in the treatment groups. PDAs reduced SH in ground turkey throughout storage, with TC yielding the most significant reduction in SH. TC-treated patties also exhibited the most negligible change in metabolite composition throughout the five-day storage period. Consistently high cinnamic acid concentrations may contribute to observed antimicrobial activity. Metabolites indicative of microbial activity, like glucose and hypoxanthine, were elevated in the untreated positive control. Poultry consumption is driven by convenience, affordability, and health considerations. Misconceptions and skepticism towards labels appear to be rooted in unfamiliarity with regulations. These studies reveal the utility of LB and PDAs in mitigating SH in turkeys and their products. Additionally, engaging and educating consumers may be a prerequisite to acceptance of the associated costs, thereby alleviating the financial burden on producers and potentially catalyzing the adoption of more sustainable production practices.
■590 ▼aSchool code: 0130.
■650 4▼aAnimal sciences.
■650 4▼aMicrobiology.
■650 4▼aFood science.
■650 4▼aSustainability.
■653 ▼aHurdle Approach
■653 ▼aMetabolome
■653 ▼aPlant-derived antimicrobials
■653 ▼aProbiotics
■653 ▼aStakeholder engagement
■690 ▼a0475
■690 ▼a0410
■690 ▼a0359
■690 ▼a0640
■71020▼aUniversity of Minnesota▼bAnimal Sciences.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0130
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356509▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
