Article
Chemistry, Applied
Siyu Zhang, Sarah A. Willett, Joseph R. Hyatt, Silvana Martini, Casimir C. Akoh
Summary: Phenolic compounds like 1-o-galloylglycerol, rosmarinic acid, and BHT showed the highest oxidative stability in structured lipids, with a mixture of 1-o-galloylglycerol and tocopherols performing the best in protecting against oxidation.
Article
Chemistry, Applied
Siyu Zhang, Joseph R. Hyatt, Casimir C. Akoh
Summary: A novel diacylglycerol-based galloyl structured lipid, 1,2-dipalmitoylgalloylglycerol (DPGG), was synthesized through enzymatic transesterification process, and the structure of the reaction product was elucidated. The reaction conditions affecting the yield of DPGG were optimized in the study.
Article
Chemistry, Applied
Juhee Lee, Sarah A. Willett, Casimir C. Akoh, Silvana Martini
Summary: This research showed that high-intensity ultrasound can alter the physical properties of structured lipids without affecting their oxidation levels.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2022)
Article
Food Science & Technology
Yuhang Chen, Yuxin Wang, Jun Jin, Qingzhe Jin, Casimir C. Akoh, Xingguo Wang
Summary: Softening and fat bloom are serious quality defects for dark chocolates, mainly caused by insufficient melting characteristics of cocoa butter (CB). Mango kernel fat stearin (MKFS) and hard palm-mid fraction (HPMF) with similar triacylglycerol structure to CB can improve both heat and bloom stabilities, making them suitable for hot climates.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
Jun Jin, Siyu Zhang, Casimir C. Akoh
Summary: Monoacylglycerols (MAGs) containing polyunsaturated fatty acids (PUFAs) at the sn-2 position were prepared from menhaden oil and single cell oil in this study. The optimal alcoholysis reaction was catalyzed by mixed lipases, followed by purification through liquid-liquid extraction and further concentration. A systematic method for product identification using Electrospray Ionization High-Resolution Accurate-Mass Tandem Mass Spectrometry and Nuclear Magnetic Resonance was established. The final products contained 69.3-71.5 g/100g of 2-MAGs, with PUFAs ranging from 60.2 to 61.6 g/100g, and can potentially be used for the production of functional lipids for health purposes.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Applied
Siyu Zhang, Joseph R. Hyatt, Casimir C. Akoh
Summary: In this study, a multi-functional galloylated structured lipid DOGG was successfully synthesized using immobilized food grade Candida antarctica lipase B. The reaction conditions were optimized and the structure of the product was confirmed. The enzyme showed good reusability and DOGG has potential applications as an antioxidant and nutraceutical.
Article
Engineering, Chemical
Yiwen Li, Hea Jin Park, Haning Xiu, Casimir C. Akoh, Fanbin Kong
Summary: An ex vivo porcine intestinal model was used to predict the effective permeability (Peff) of nutrients, and it closely predicted the Peff of two model nutrients in humans. The model showed similar results to an in vitro dialysis model, and both models have potential for predicting nutrient bioavailability.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Food Science & Technology
Carla Cifuentes-Collari, Rodrigo Valenzuela-Baez, Jose Luis Guil-Guerrero, Casimir C. Akoh, Miguel Angel Rincon-Cervera
Summary: This study synthesized 1,3-diacylglycerols containing stearidonic acid, gamma-linolenic acid, and alpha-linolenic acid through lipase-mediated catalysis, and investigated their potential as functional ingredients in foods for weight and obesity management.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
A. Jones, S. Zhang, C. C. Akoh, S. Martini
Summary: In this study, the effects of anhydrous milk fat (AMF) and AMF fractionated at different temperatures on water loss (WL) and physical properties of butter were evaluated. It was found that the addition of higher melting AMF fractions in the cream resulted in decreased WL, while lower melting AMF fractions decreased WL when incorporated in the working step.
INTERNATIONAL DAIRY JOURNAL
(2023)
Article
Food Science & Technology
Byung Hee Kim, Jihyun Hwang, Casimir C. Akoh
Summary: This review summarizes recent studies on the use of microbial lipases, particularly Eversa Transform 2.0 and Lecitase Ultra, as biocatalysts in both liquid and immobilized forms. The application of these lipases includes various industrial processes such as fat/oil processing, food preparation, cosmetics and pharmaceuticals production, environment-friendly materials production, and chiral resolution. The immobilized lipases showed the potential for repeated use. Commercial preparation of immobilized lipases could enhance their industrial application.
CURRENT OPINION IN FOOD SCIENCE
(2023)
Article
Chemistry, Applied
Siyu Zhang, Casimir C. Akoh
Summary: This research overcame the oxidative instability of o3-3 fatty acids (FAs) by combining processing techniques with antioxidant addition. The resulting microencapsulated oleogel with 1-o-galloylglycerol (GG) as antioxidant showed similar physicochemical properties to store-bought yogurt using saturated fat source. These findings could pave the way for incorporating o3-3 FAs into a variety of products in the future.
Article
Agricultural Engineering
Yuhang Chen, Yuxin Wang, Xiaoyu Zheng, Jun Jin, Qingzhe Jin, Casimir C. Akoh, Xingguo Wang
Summary: This article investigated the composition and structural characteristics of mangosteen seed fat (MSF), which was found to be rich in stearic acid, linoleic acid, and oleic acid. The triacylglycerol structure of MSF was relatively uniform, and showed a steep solid fat content profile as temperature increased. The study suggests that MSF may have potential applications in the manufacture of products that require specific crystal forms, such as mucosal delivery tablets, skincare products, and cosmetics.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Meeting Abstract
Chemistry, Applied
Joseph Hyatt, Casimir Akoh, Siyu Zhang
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2022)
Meeting Abstract
Chemistry, Applied
Siyu Zhang, Casimir Akoh
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2021)
Meeting Abstract
Chemistry, Applied
Siyu Zhang, Sarah Willett, Joseph Hyatt, Silvana Martini, Casimir Akoh
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2021)
