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Ningrum A, Wardani DW, Vanidia N, Sarifudin A, Kumalasari R, Ekafitri R, Kristanti D, Setiaboma W, Munawaroh HSH. Evaluation of Antioxidant Activities from a Sustainable Source of Okara Protein Hydrolysate Using Enzymatic Reaction. Molecules 2023; 28:4974. [PMID: 37446636 DOI: 10.3390/molecules28134974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 07/15/2023] Open
Abstract
Okara is a solid byproduct created during the processing of soy milk. The production of protein hydrolysates utilizing enzymatic tests such as papain can result in the production of bioactive peptides (BPs), which are amino acid sequences that can also be produced from the okara protein by hydrolysis. The objective of this study was to investigate the antioxidant activities of okara hydrolysates using papain, based on the in silico and in vitro assays using the papain enzyme. We found that using the in silico assessment, the antioxidant peptides can be found from the precursor (glycinin and conglycinin) in okara. When used as a protease, papain provides the maximum degree of hydrolysis for antioxidative peptides. The highest-peptide-rank peptide sequence was predicted using peptide ranks such as proline-histidine-phenylalanine (PHF), alanine-aspartic acid-phenylalanine (ADF), tyrosine-tyrosine-leucine (YYL), proline-histidine-histidine (PHH), isoleucine-arginine (IR), and serine-valine-leucine (SVL). Molecular docking studies revealed that all peptides generated from the parent protein impeded substrate access to the active site of xanthine oxidase (XO). They have antioxidative properties and are employed in the in silico approach to the XO enzyme. We also use papain to evaluate the antioxidant activity by using in vitro tests for protein hydrolysate following proteolysis. The antioxidant properties of okara protein hydrolysates have been shown in vitro, utilizing DPPH and FRAP experiments. This study suggests that okara hydrolysates generated by papain can be employed as natural antioxidants in food and for further applications, such as active ingredients for antioxidants in packaging.
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Affiliation(s)
- Andriati Ningrum
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Flora Street No. 1, Bulaksumur, Yogyakarta 55281, Indonesia
| | - Dian Wahyu Wardani
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Flora Street No. 1, Bulaksumur, Yogyakarta 55281, Indonesia
| | - Nurul Vanidia
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Flora Street No. 1, Bulaksumur, Yogyakarta 55281, Indonesia
| | - Achmat Sarifudin
- Research Centre for Appropriate Technology, National Research and Innovation Agency, KS. Tubun Street No. 5, Subang 41213, Indonesia
| | - Rima Kumalasari
- Research Centre for Appropriate Technology, National Research and Innovation Agency, KS. Tubun Street No. 5, Subang 41213, Indonesia
| | - Riyanti Ekafitri
- Research Centre for Appropriate Technology, National Research and Innovation Agency, KS. Tubun Street No. 5, Subang 41213, Indonesia
| | - Dita Kristanti
- Research Center for Food Technology and Processing, National Research and Innovation Agency, Jogja-Wonosari Street km 31, 5 Playen, Gunungkidul, Yogyakarta 55861, Indonesia
| | - Woro Setiaboma
- Research Center for Food Technology and Processing, National Research and Innovation Agency, Jogja-Wonosari Street km 31, 5 Playen, Gunungkidul, Yogyakarta 55861, Indonesia
| | - Heli Siti Helimatul Munawaroh
- Study Program of Chemistry, Department of Chemistry Education, Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia, Bandung 40154, Indonesia
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Wu F, Luo X, Zhang Y, Wang P, Chang Y, He Z, Liu X. Purification, Identification, and Inhibitory Mechanisms of a Novel ACE Inhibitory Peptide from Torreya grandis. Nutrients 2023; 15:nu15102374. [PMID: 37242257 DOI: 10.3390/nu15102374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Torreya grandis meal has a high protein content and an appropriate amino acid ratio, making it an excellent protein source for producing ACE inhibitory peptides. To promote its application in food, medicine, and other fields, an alkaline protease hydrolysate of Torreya grandis was used in this study to isolate and identify a novel angiotensin-converting enzyme inhibitory peptide, VNDYLNW (VW-7), using ultrafiltration, gel chromatography purification, LC-MS/MS, and in silico prediction. The results show that the IC50 value of VW-7 was 205.98 µM. The Lineweaver-Burk plot showed that VW-7 had a mixed-type inhibitory effect on ACE. Meanwhile, according to the results of molecular docking, VW-7 demonstrated a strong affinity for ACE (binding energy -10 kcal/mol). VW-7 was bound to ACE through multiple binding sites. In addition, VW-7 could remain active during gastrointestinal digestion in vitro. Nitric oxide (NO) generation in human endothelial cells could rise after receiving a pretreatment with VW-7. These results indicated that Torreya grandis meal protein can be developed into products with antihypertensive function, and VW-7 has broad application prospects in the field of antihypertensive.
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Affiliation(s)
- Fenghua Wu
- College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Xiaohui Luo
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yongzhu Zhang
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Peng Wang
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yinzi Chang
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Zhiping He
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Xingquan Liu
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
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Durrani R, Meiyun Y, Yang B, Durand E, Delavault A, Bowen H, Weiwei H, Yiyang L, Lili S, Fei G. Identification of novel bioactive proteins and their produced oligopeptides from Torreya grandis nuts using proteomic based prediction. Food Chem 2022; 405:134843. [DOI: 10.1016/j.foodchem.2022.134843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/21/2022] [Accepted: 10/31/2022] [Indexed: 11/05/2022]
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Cui JJ, Li WJ, Wang CL, Huang YQ, Lin W, Zhou B, Yue JM. Antimicrobial abietane-type diterpenoids from Torreya grandis. PHYTOCHEMISTRY 2022; 201:113278. [PMID: 35716715 DOI: 10.1016/j.phytochem.2022.113278] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/31/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
Twelve undescribed abietane-type diterpenoids, along with ten known analogues were isolated from the twigs and leaves of Torreya grandis var. merrillii Hu. Their structures were characterized by spectroscopic data analyses, single-crystal X-ray diffraction, and ECD spectra. Torgranols A-C possess three different architectures shaped via a common 6,7-seco-procedure and subsequent ring formations. In particular, torgranol A represents the first example of a 6,7-seco-abietane diterpenoid featuring a unique oxygen bridge between C-3 and C-6. The biosynthetic pathways for torgranols A-C were proposed. Some compounds displayed antimicrobial activities against Mycobacterium tuberculosis and/or Staphylococcus aureus.
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Affiliation(s)
- Jiao-Jiao Cui
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Wei-Jia Li
- Department of Pathogen Biology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Cheng-Lei Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Yi-Qi Huang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Wei Lin
- Department of Pathogen Biology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Bin Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China.
| | - Jian-Min Yue
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China.
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Quan W, Xu Y, Xie Y, Peng F, Lin Y. In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from Torreya grandis Seed Coat. Molecules 2022; 27:molecules27175560. [PMID: 36080335 PMCID: PMC9457832 DOI: 10.3390/molecules27175560] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Torreya grandis is an important economic forestry product in China, whose seeds are often consumed as edible nuts, or used as raw materials for oil processing. To date, as an important by-product of Torreya grandis, comprehensive studies regarding the Torreya grandis seed coat phenolic composition are lacking, which greatly limits its in-depth use. Therefore, in the present study, the Torreya grandis seed coat was extracted by acid aqueous ethanol (TE), and NMR and UHPLC-MS were used to identify the major phenolics. Together with the already known phenolics including protocatechuic acid, catechin, epigallocatechin gallate, and epicatechin gallate, the unreported new compound 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid was discovered. The results of the antioxidant properties showed that both TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid exhibited strong ABTS, DPPH, and hydroxyl radical-scavenging activity, and significantly improved the O/W emulsion’s oxidation stability. These results indicate that the TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid could possibly be used in the future to manufacture functional foods or bioactive ingredients. Moreover, further studies are also needed to evaluate the biological activity of TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid to increase the added value of Torreya grandis by-products.
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Affiliation(s)
- Wei Quan
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
- Correspondence: (W.Q.); (Y.L.); Tel./Fax: +86-510-85919065 (W.Q.)
| | - Yang Xu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yiting Xie
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Fei Peng
- Department of Food Science and Technology, Hunan Food and Drug Vocational College, Changsha 410128, China
| | - Yong Lin
- Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha 410128, China
- Correspondence: (W.Q.); (Y.L.); Tel./Fax: +86-510-85919065 (W.Q.)
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Asaithambi N, Singha P, Singh SK. Recent application of protein hydrolysates in food texture modification. Crit Rev Food Sci Nutr 2022; 63:10412-10443. [PMID: 35653113 DOI: 10.1080/10408398.2022.2081665] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The demand for clean labels has increased the importance of natural texture modifying ingredients. Proteins are unique compounds that can impart unique textural and structural changes in food. However, lack of solubility and extensive aggregability of proteins have increased the demand for enzymatically hydrolyzed proteins, to impart functional and structural modifications to food products. The review elaborates the recent application of various proteins, protein hydrolysates, and their role in texture modification. The impact of protein hydrolysates interaction with other food macromolecules, the effect of pretreatments, and dependence of various protein functionalities on textural and structural modification of food products with controlled enzymatic hydrolysis are explained in detail. Many researchers have acknowledged the positive effect of enzymatically hydrolyzed proteins on texture modification over natural protein. With enzymatic hydrolysis, various textural properties including foaming, gelling, emulsifying, water holding capacity have been effectively improved. It is evident that each protein is unique and imparts exceptional structural changes to different food products. Thus, selection of protein requires a fundamental understanding of its structure-substrate property relation. For wider applicability in the industrial sector, more studies on interactions at the molecular level, dosage, functionality changes, and sensorial attributes of protein hydrolysates in food systems are required.
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Affiliation(s)
- Niveditha Asaithambi
- Department of Food Process Engineering, National Institute of Technology (NIT) Rourkela, Rourkela, India
| | - Poonam Singha
- Department of Food Process Engineering, National Institute of Technology (NIT) Rourkela, Rourkela, India
| | - Sushil Kumar Singh
- Department of Food Process Engineering, National Institute of Technology (NIT) Rourkela, Rourkela, India
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