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Advancements in Plant-Based Fat Analogs and Iron-Binding Pea Protein Hydrolysates: Structural, Textural, and Nutritional Characterization
Advancements in Plant-Based Fat Analogs and Iron-Binding Pea Protein Hydrolysates: Structural, Textural, and Nutritional Characterization
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103700
- ISBN
- 9798314896594
- DDC
- 641
- 저자명
- Teng, Chong.
- 서명/저자
- Advancements in Plant-Based Fat Analogs and Iron-Binding Pea Protein Hydrolysates: Structural, Textural, and Nutritional Characterization
- 발행사항
- [Sl] : The Ohio State University, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 197 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: Campanella, Osvaldo.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2023.
- 초록/해제
- 요약Due to ethical, ecological, health, religious and economic reasons, there is a growing trend of consuming less meat product. Innovative plant-based meat analogs have been developed to mimic the taste, texture, and nutritional value of animal-based meat. In opposite to the broad range of success in texturizing plant protein into fibrous structure, it is still challenging to mimic the animal adipose tissue in terms of cooking behavior, texture, and appearance due to the unique fatty acid profile and cellular structure of animal adipose tissue. One of the objectives of this study is therefore to develop an animal adipose mimetic that solidifies liquid oil.An alginate-based emulsion gel was chosen as the target system due to its low cost, ability to form thermal stable elastic gel and plant-based nature. In the first and second part of the study, butter or soybean oil was incorporated into the emulsion gel by first homogenizing with alginate solution with the help of proteins (butter proteins and pea proteins, respectively) then gelation with calcium. Physicochemical tests showed that the pre-gelled emulsion had a shear-thinning behavior regardless of the lipid content or type. After gelation, the gels showed great heat stability and leached lipid with prolonged heating, and the stability of soybean oil-based emulsion gel was even higher.Confocal microscopy showed that the lipids appeared as spherical droplets within the gelled aqueous phase that contained alginate and protein. When the lipid content increased, butter droplets deformed and aggregated into larger droplets, while soybean oil didn't show severe aggregation but a tightly packed pattern. Differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR) test results indicated insignificant change in lipid melting or functional groups, but an interaction between alginate and pea protein was suggested. As for mechanical profile and appearance, the gel based on butter displayed high elasticity, and the soybean oil gel had a light-yellow color like beef fat trimming.Iron deficiency is influencing 20% to 25% of the global population, and is especially prevalent in women, children, and adolescents. Iron plays an essential role in transporting oxygen, synthesizing enzymes, boosting immune system, and supports multiple other body functions. To combat iron deficiency, enzymatically treated proteins have been evidenced to have both enhanced iron-binding ability and bio-accessibility. In this study, pea protein was selected as target protein due to the wide commercial availability, low allergenicity and balanced amino acid profile.After being enzymatically hydrolyzed by trypsin, alcalase or esperase for up to 150 min, pea protein hydrolysates showed raised iron-binding capacity, and alcalase had the overall highest potential probably due to its broader active sites. It was found that the portions that are only soluble at pH 8 but not pH 6.5 contributed to most of the total iron-binding capacity. In pea protein isolate, the fractions 5~10 kDa had a very high iron-binding capacity, which were found partially destroyed after enzymatic hydrolysis, while the fractions 10kDa and 5kDa had improved iron-binding capacity. UV-vis spectrum, turbidity test and confocal microscopy imaging all confirmed the generation of protein aggregates after binding with iron. Circular dichroism spectrum suggested a reduction in secondary structure after iron-binding events.The ensemble of this study may provide reference to the food industry for designing plant-based meat analogs that require a higher degree of similarity to animal adipose tissues as well as better nutritive value in terms of iron content.
- 일반주제명
- Food science
- 일반주제명
- Nutrition
- 키워드
- Elastic gel
- 키워드
- Soybean oil
- 기타저자
- The Ohio State University Food Science and Technology
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798314896594
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a641
■1001 ▼aTeng, Chong.
■24510▼aAdvancements in Plant-Based Fat Analogs and Iron-Binding Pea Protein Hydrolysates: Structural, Textural, and Nutritional Characterization
■260 ▼a[Sl]▼bThe Ohio State University▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a197 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: Campanella, Osvaldo.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2023.
■520 ▼aDue to ethical, ecological, health, religious and economic reasons, there is a growing trend of consuming less meat product. Innovative plant-based meat analogs have been developed to mimic the taste, texture, and nutritional value of animal-based meat. In opposite to the broad range of success in texturizing plant protein into fibrous structure, it is still challenging to mimic the animal adipose tissue in terms of cooking behavior, texture, and appearance due to the unique fatty acid profile and cellular structure of animal adipose tissue. One of the objectives of this study is therefore to develop an animal adipose mimetic that solidifies liquid oil.An alginate-based emulsion gel was chosen as the target system due to its low cost, ability to form thermal stable elastic gel and plant-based nature. In the first and second part of the study, butter or soybean oil was incorporated into the emulsion gel by first homogenizing with alginate solution with the help of proteins (butter proteins and pea proteins, respectively) then gelation with calcium. Physicochemical tests showed that the pre-gelled emulsion had a shear-thinning behavior regardless of the lipid content or type. After gelation, the gels showed great heat stability and leached lipid with prolonged heating, and the stability of soybean oil-based emulsion gel was even higher.Confocal microscopy showed that the lipids appeared as spherical droplets within the gelled aqueous phase that contained alginate and protein. When the lipid content increased, butter droplets deformed and aggregated into larger droplets, while soybean oil didn't show severe aggregation but a tightly packed pattern. Differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR) test results indicated insignificant change in lipid melting or functional groups, but an interaction between alginate and pea protein was suggested. As for mechanical profile and appearance, the gel based on butter displayed high elasticity, and the soybean oil gel had a light-yellow color like beef fat trimming.Iron deficiency is influencing 20% to 25% of the global population, and is especially prevalent in women, children, and adolescents. Iron plays an essential role in transporting oxygen, synthesizing enzymes, boosting immune system, and supports multiple other body functions. To combat iron deficiency, enzymatically treated proteins have been evidenced to have both enhanced iron-binding ability and bio-accessibility. In this study, pea protein was selected as target protein due to the wide commercial availability, low allergenicity and balanced amino acid profile.After being enzymatically hydrolyzed by trypsin, alcalase or esperase for up to 150 min, pea protein hydrolysates showed raised iron-binding capacity, and alcalase had the overall highest potential probably due to its broader active sites. It was found that the portions that are only soluble at pH 8 but not pH 6.5 contributed to most of the total iron-binding capacity. In pea protein isolate, the fractions 5~10 kDa had a very high iron-binding capacity, which were found partially destroyed after enzymatic hydrolysis, while the fractions 10kDa and 5kDa had improved iron-binding capacity. UV-vis spectrum, turbidity test and confocal microscopy imaging all confirmed the generation of protein aggregates after binding with iron. Circular dichroism spectrum suggested a reduction in secondary structure after iron-binding events.The ensemble of this study may provide reference to the food industry for designing plant-based meat analogs that require a higher degree of similarity to animal adipose tissues as well as better nutritive value in terms of iron content.
■590 ▼aSchool code: 0168.
■650 4▼aFood science
■650 4▼aNutrition
■653 ▼aElastic gel
■653 ▼aSoybean oil
■653 ▼aInfrared spectroscopy
■653 ▼aGlobal population
■690 ▼a0359
■690 ▼a0570
■71020▼aThe Ohio State University▼bFood Science and Technology.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358211▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


