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International journal of food science & technology
Published for the Institute of Food Science and Technology (U.K.) by Blackwell Scientific Publications
International journal of food science & technology

Published for the Institute of Food Science and Technology (U.K.) by Blackwell Scientific Publications

0950-5423

International journal of food science & technology/Journal International journal of food science & technology
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    Synergies of bioactivities, mechanisms, dietary factors and functional food applications of medicinal insulin plant (Costus pictus D.): a review

    Naveen ChandrakarJaspreet KaurMamoni Banerjee
    8933-8942页
    查看更多>>摘要:Modernisation has significantly altered lifestyles, particularly eating habits, contributing to the increase of chronic diseases, with diabetes mellitus being a predominant metabolic disorder. Medicinal herbs such as Costus pictus (C. pictus), commonly known as the Insulin plant, offer a promising approach to managing these conditions. It is a perennial plant from the Costaceae family rich in proteins, fibres, minerals (K, Ca, Cr, Fe, Mn, Cu, Zn), and bioactive compounds. This review highlighted the plant's potential in mitigating chronic diseases and metabolic disorders due to its diverse bioactivities, including hepatoprotective, anti-inflammatory, anticancer, antidiabetic, and antioxidant properties. These benefits are primarily attributed to its phytochemicals, mainly flavonoids and phenolic compounds. The antidiabetic mechanism involves suppressing metabolic enzymes essential for carbohydrate metabolism, while its antioxidant activity helps reduce excessive reactive oxygen species (ROS) levels implicated in various diseases. Furthermore, C. pictus can be incorporated into functional foods such as bakery and confectionery products, functional drinks, and edible coatings. We discussed the dietary factors, bioactivities, and underlying mechanisms associated with Costus pictus D., emphasising its applicability in functional food formulations. The synthesis of current research highlights the plant's role in modulating glucose metabolism, enhancing antioxidant defences, and its potential in mitigating diseases such as diabetes. By delving into the synergies between its dietary factors and bioactivities, this review aims to elucidate the multifaceted benefits of Costus pictus D., thereby fostering its integration into sustainable agricultural practises and contributing to public health nutrition.

    Potential and application of tandem mass spectrometry (MS/MS) in the analysis and identification of novel bacteriocins: a review

    Muhammad Alfid KurniantoPrecious Adedayo AdesinaDina Mustika Rini
    8943-8960页
    查看更多>>摘要:Bacteriocins are antimicrobial peptides synthesised ribosomally by Gram-positive or Gram-negative bacteria to gain a competitive advantage. The majority of bacteriocins are derived from Gram-positive bacteria, with lactic acid bacteria being the most common source. Because they are considered 'natural', there is currently significant development of bacteriocins for application as food preservative agents. As a preservative agent, bacteriocin activity is highly dependent on purity, down to the amino acid profile and sequence. Therefore, bacteriocin identification is important. Currently, MS is a cutting-edge tool in bacteriocin identification. This method has high selectivity, sensitivity and resolution. To the best of our knowledge, systematic reviews focusing on the application of MS for bacteriocin identification are currently limited. In light of this, the objective of this study is to provide a comprehensive review and summary of MS technologies in bacteriocin research, with a particular focus on the discovery and characterisation of novel sources of bacteriocin. Additionally, studies related to the discovery of bacteriocins from various sources, their role as antimicrobial agents, and their synthesis are emphasised. Thus, this study presents a comprehensive analysis of the advantages, limitations, and future perspectives of the methods employed.

    Magnetic field improves the quality of frozen tilapia fillets by decreasing the ice crystals during freezing process

    Peking YeKaixuan LuoAiguo FengDingxiang Zhao...
    8961-8971页
    查看更多>>摘要:In this study, the alternating magnetic field (AMF) with frequency of 50, 100, 150, 200 and 250 Hz at magnetic field intensity of 5 mT was used to assist the freezing of tilapia fillets, with no magnetic field (NMF) as a control group. The evaluation of thawed tilapia fillets encompassed an assessment of freezing curve, texture, microstructure, moisture state and protein structure, followed by a subsequent analysis of their correlation. The findings showed that the application of a magnetic field during the freezing process yielded favourable outcomes in enhancing the overall quality of tilapia fillets. Among them, 200 Hz had the best effect. Under the condition, the frozen tilapia fillets assisted by magnetic field showed the shortest freezing time, the least decrease in hardness and elasticity and the best chewiness after thawing. The size of the ice crystals generated during freezing was small and uniform, and the fractal dimension of the frozen sections was the highest. Muscle tissue was the least damaged, which led to the improvement of its water-holding capacity. Magnetic field-assisted freezing was found to maintain the α-helix and P-sheet in the secondary structure of proteins. The correlation analysis showed that cohesion, elasticity, fractal dimension, FD, A_2, A_(22) and P-turn were closely related to the quality changes of tilapia fillets after magnetic field treatment.

    Application of yellow mustard gum in preparation of egg-free mayonnaise

    Ruoyan LiuXinya WangH. Douglas GoffSteve W. Cui...
    8972-8982页
    查看更多>>摘要:Yellow mustard gum (YMG) is a natural hydrocolloid extracted from the viscous fraction of the seed coat, a by-product of mustard seeds, and possesses superior emulsifying capacity in emulsions. However, there is no application of YMG for commercial products. The demand for vegan mayonnaise (VM) has increased in recent years and the challenge is to maintain the original consistency and taste while replacing eggs from conventional mayonnaise. To obtain high-quality VM and to investigate the potential of YMG as a food additive, YMG was applied to VM at 0%, 0.2%, 0.4%, 0.6%, 0.8%, and 1.0% (w/w) in this study. The physical properties (index of stability, rheological properties and particle size characterisation), storage stability (visual stability, microstructure observation and cold tolerance) and texture of YMG-formulated VM were measured and compared with commercial products to assess the quality and market prospects. The results showed that the VM obtained higher stability, more non-Newtonian flow behaviour, and a smaller droplet size with higher YMG content. After 90 days of storage, no separation occurred in the YMG-added VM. YMG improves the shelf-life of VM, and mayonnaise formulated with YMG has comparative or better texture properties compared with commercial counterparts. Overall, YMG-added VM could be more appealing to consumers favouring plant-based foods and have the potential to substitute for traditional products. YMG is beneficial to vegan product development with clean-label requirements.

    Improvement of functional properties of C/i/ore//a-inulin conjugates via Maillard reaction

    Rabaila RiazOzan TasMecit Halil OztopMuhammad Bilal Khan Niazi...
    8983-8997页
    查看更多>>摘要:Functionalities of proteins for the formulation of protein-fortified products are crucial, impacting the use of protein from sustainable sources such as algae. Glycation (the initial step of the Maillard browning reaction) is a standout modification technique explored to improve the functions of the protein in the food matrices. In this study, Chlorella powder was conjugated with inulin using a wet glycation method. It is a quick, scalable and easy method for improving the functionality of food proteins. In this study, conjugation was performed for three different Chlorella to inulin molar ratios (S 1:1, S3:1 and S5:1). The solution of each molar ratio was heated at 90℃ for 30 min under alkaline state (9.0 pH). Characterisation was conducted employing OPA assay, browning intensity and FTIR spectroscopy techniques. The results suggested glycation achieved the highest for the C/;/ore//a-inulin ratio of 1:1. Glycation extent influenced the solubility of this conjugate significantly (P < 0.05) under an acidic medium. Other functional properties including hydration, moisture uptake, oil-binding and emulsifying activity were also significantly (P < 0.05) enhanced compared to unmodified Chlorella powder. Chlorella conjugate with molar ratio 1:1 also displayed higher antioxidant properties suggesting glycation's role in improving Chlorella powder free radical scavenging capabilities (1.25-fold increase) and reducing power (2.24-fold increase). The total scavenging activity and total reducing power of S1: 1 were 2.526 × 10~(-3) and 1.872 × 10~(-3) mg mL~(-1) mg~(-1)(Trolox Eq.), respectively. The results provide an understanding of different functionalities for glycated conjugates promising utilisation in the food and beverage industry.

    Application of yellow mustard gum-fenugreek mixed gum in preparation of non-dairy fat whipping cream

    Ruoyan LiuXinya WangH. Douglas GoffSteve W. Cui...
    8998-9008页
    查看更多>>摘要:Yellow mustard gum (YMG) and fenugreek gum (FG) are both natural hydrocolloids derived from plant seeds. They showed synergistic effects of increased viscosity upon mixing thus expanding their applications. In this study, a synergistic YMG-FG (7:3) blend of different total gum concentrations (0%, 0.05%, 0.1%, 0.15%, 0.2% and 0.25%, w/w) was used to develop a whipping cream formula with dairy fat replaced by palm kernel oil. Whipping creams of both liquid emulsion and whipped cream were characterised in terms of particle size, rheological properties, whippability and foam stability, texture and micro-structure. The liquid emulsion before whipping showed a shear-thinning behaviour regardless of the gum concentration. Upon whipping, the overrun of whipped cream decreased while the foam stability increased with increasing gum mixture content. The whipped cream with the addition of gum mixture retained the shape after storing overnight at 22 ℃ in comparison with two collapsed commercial samples. The whipped cream with 0.1% gum mixture exhibited optimal foam stability and textural properties among all the samples. Overall, the synergistic blend of YMG-FG can be used as a natural stabiliser in formulating non-dairy fat whipping cream products to improve foam stability and airy /fluffy texture.

    Study on changes of bioactive substances and flavour characteristics during fermentation of jujube vinegar

    Shimin ZhaoFengxian TangYao ZhangWenchao Cai...
    9009-9019页
    查看更多>>摘要:Jujubes are an excellent source of sugar and nutrients, making them well-suited for fermentation. Previous research on jujubes has primarily focused on their use in fermented beverages and fruit wines, but their potential for vinegar production has not been sufficiently explored. Therefore, this study produced jujube vinegar from jujube as raw material using microbial fermentation technology, and the changes in bioactive substances and volatile components during different fermentation stages were monitored. Results revealed that the primary organic acids in jujube vinegar were acetic acid, malic acid and lactic acid. The levels of phenolic compounds, such as epicatechin and ferulic acid, increased significantly by 3.5-fold and 3.2-fold, respectively, after acetic fermentation, resulting in an improvement in antioxidant activity. In addition, a total of seventy-three volatile substances were detected in jujube vinegar, with acids accounting for 72.13% of the overall content. Isoamyl alcohol, ethyl phenylacetate, benzaldehyde and 3-hydroxy-2-butanone were also the principal flavour compounds of jujube vinegar, which are the main source of its intense flavour. This study reveals the dynamic law of nutrients and flavour compounds during the fermentation process of jujube vinegar. The findings provide a theoretical reference and practical basis for the production of jujube vinegar.

    Effect of phosphorylated modification on natural inulin: structural characterisation and gel properties

    Qiang ChenDenglin LuoChonghui YueZhouya Bai...
    9020-9028页
    查看更多>>摘要:To improve the gel properties of natural inulin (FI), in this study, FI was phosphorylated to prepare natural inulin phosphodiester (PDFI). The structures of FI and PDFI were characterised by Fourier transform infrared spectroscopy (FTIR), particle size and scanning electron microscopy. FI and PDFI gels (mass fraction 20%^40%) were prepared and stored for 0-7 days to study their effects on water-holding capacity, rheology and texture properties. The FTIR spectra showed absorption peaks of P-O-C and P = O bonds, indicating that some hydroxyl groups were replaced and phosphorylation was successful. Compared with FI, the specific surface area of PDFI was increased 7.7-fold and the microstructure was smoother. When the fraction of PDFI was 35%, the water-holding rate of PDFI gel was 21.2%, 23.3%, 19.7%, 19.1% and 19.3% higher than FI gel at different storage time, respectively. PDFI gel with higher mass fraction (25%-40%) had lower hardness. Rheological analysis showed that PDFI gels had stronger viscoelastic and solid-like properties. These results reveal native inulin phosphorylation improved gel properties.

    Rheological properties and in vitro digestibility of chicken breast myofibrillar protein containing various psyllium (Plantago ovata) husk concentrations

    Ji Seon ChoiKoo Bok Chin
    9029-9038页
    查看更多>>摘要:Most dietary fibres improved rheological properties but negatively impacted digestibility. However, the effect of psyllium husk powder (PHP) on digestibility has not been yet reported. Thus, this study aimed to evaluate the rheological properties and digestibility of chicken myofibrillar protein (MP) containing different concentrations of PHP (0%, 0.5%, 1.0%, 1.5%) at 0.45 m NaCl. To assess the rheological properties of MP, viscosity, hydrophobicity, disulphide bond, SDS-PAGE, cooking yield and gel strength were evaluated. The addition of PHP enhanced water retention capacity and protein-protein interactions in the MP system. To evaluate the effect of PHP on digestibility, protein digestibility, SDS-PAGE and micro-structure observations were performed. It was confirmed that the addition of PHP improved the protein digestibility of MP by measuring the differences in protein content (%). Therefore, the addition of PHP into MP gel improved not only the rheological properties but also the protein digestibility during in vitro digestion.

    Changes in faecal microbiota in 6- to 12-year-old children after a new nutritional strategy: the ALINFA randomised controlled trial

    Naroa AnduezaJose I. Riezu-BojInigo Clemente-LarramendiMarta Cuervo...
    9039-9050页
    查看更多>>摘要:Gut microbiota seems to play a critical role in health and disease. This study aimed to evaluate the effect of a nutritional intervention in children 6-12 years old on the microbiota and to identify possible dietary components involved in the change. A 2-month parallel, controlled randomised trial was conducted. The nutritional intervention was based on the recommendations of the Mediterranean diet, for both intervention groups, with the difference that in the ALINFA group a more intensive intervention based on a complete diet, while in the control group, dietary advice was provided. After the intervention, ALINFA group showed an increase in the richness and diversity of their microbiota as well as changes in the abundance of different bacterial heels. These changes were mainly influences by fibre intake and the type of fat consumed. The ALINFA nutritional intervention seems to be able to positively influence children's microbiota, showing significant changes within 2 months.