scholarly journals Molecular Characteristics, Synthase, and Food Application of Cereal β-Glucan

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Lijing Sun ◽  
Mengyun Hu ◽  
Jie Zhao ◽  
Liangjie Lv ◽  
Yelun Zhang ◽  
...  

Cereal β-glucan is a type of valuable dietary fiber that mainly exists in the aleurone, subaleurone, and endosperm of some cereal grains. β-Glucan is acknowledged as a functional food ingredient owing to its multiple health benefits, including the prevention of diabetes, reduction in the incidence of cardiovascular disease, antitumor effects, antioxidant activities, and immunostimulation. It is well documented that cellulose synthase-like CslF/H/J genes encode synthases responsible for β-glucan biosynthesis in cereal grains. Recently, β-glucan has been widely applied as an emulsion stabilizer, thickening agent, fat substitute, and bioactive ingredient in the food industry due to its water solubility, viscosity, gelation property, and health benefits. Therefore, the present paper aims to review the molecular characteristics, synthase gene family, and food application of cereal β-glucan in recent years.

2020 ◽  
Vol 26 (41) ◽  
pp. 5347-5352
Author(s):  
Guoliang Wang ◽  
Qing Liu ◽  
Ying Wang ◽  
Jingyuan Li ◽  
Yue Chen ◽  
...  

γ-Poly-glutamic acid (γ-PGA) is a naturally occurring homo-polyamide produced by various strains of Bacillus. As a biopolymer substance, γ-PGA possesses a few predominant features containing good water solubility, biocompatibility, degradability and non-toxicity. Based on this, γ-PGA can be used in pharmaceutical, such as drug carrier/deliverer, vaccine adjuvant, and coating material for microencapsulation, etc. Moreover, it has also been applied in a broad range of industrial fields including food, medicine, bioremediation, cosmetics, and agriculture. Especially, γ-PGA is an extremely promising food ingredient. In this mini-review, our aim is to review the function and application progress of γ-PGA in the food industry: e.g., improving taste and flavor, enhancing physical property, and promoting health.


Author(s):  
Monica Sharma ◽  
Pranav Bhaskar

Whole-grains are important food resources for human beings, therefore, there is a need to pay special attention to increase their production to feed the world’s rapidly increasing population. Whole-grains are highly rich in nutrition and bioactive properties due to the available health-promoting biologically active metabolites such as phenolic compounds. Phenolic compounds are antioxidant-rich secondary metabolites having immense health benefits. Owing to their strong antioxidant activities, they have anti-inflammatory, anti-carcinogenic, and anti-diabetic properties; they exhibit anti-aging effects and can also cure cardiovascular diseases, obesity, etc. Numerous epidemiological studies have proven the inverse correlation between the consumption of whole cereal grains and reduce chronic diseases. This review article focuses on biologically active components of wheat grains, namely phenolic compounds, including their chemical structures, classification, biosynthesis, bioactivity, and bioavailability. Health benefits and functional potential of consumption of whole cereal grains have also been discussed.


Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4550
Author(s):  
Ying Bai ◽  
Yihan Sun ◽  
Yue Gu ◽  
Jie Zheng ◽  
Chenxu Yu ◽  
...  

Phlorotannins are a group of major polyphenol secondary metabolites found only in brown algae and are known for their bioactivities and multiple health benefits. However, they can be oxidized due to external factors and their bioavailability is low due to their low water solubility. In this study, the potential of utilizing nanoencapsulation with polyvinylpyrrolidone (PVP) to improve various activities of phlorotannins was explored. Phlorotannins encapsulated by PVP nanoparticles (PPNPS) with different loading ratios were prepared for characterization. Then, the PPNPS were evaluated for in vitro controlled release of phlorotannin, toxicity and antioxidant activities at the ratio of phlorotannin to PVP 1:8. The results indicated that the PPNPS showed a slow and sustained kinetic release of phlorotannin in simulated gastrointestinal fluids, they were non-toxic to HaCaT keratinocytes and they could reduce the generation of endogenous reactive oxygen species (ROS). Therefore, PPNPS have the potential to be a useful platform for the utilization of phlorotannin in both pharmaceutical and cosmetics industries.


2021 ◽  
Vol 10 (1) ◽  
pp. e16410111577
Author(s):  
Fernando Antônio Anjo ◽  
Bianka Rocha Saraiva ◽  
Camilla Yara Langer Ogawa ◽  
Ana Carolina Pelaes Vital ◽  
Francielle Sato ◽  
...  

Canistel (Pouteria campechiana (Kunth) Baehni) is a tropical fruit with a yellow pulp due to the presence of carotenoids, which may be interesting for application by the food industry. The aim of this research was to analyze the phytochemical and technological characteristic of dehydrated canistel pulp by thermal dehydration and freeze-drying techniques. Test for antioxidant activities (DPPH and ABTS radical scavenging; ferric reducing antioxidant power - FRAP), total polyphenols, flavonoids, carotenoids content (UV-Vis, FTIR and Raman spectroscopy), color, and hygroscopic properties were performed. The freeze-dried sample showed a higher carotenoids concentration, more intense coloring and better hydration properties than the thermally dehydrated sample. Functional groups such as water, carotenoids, primary and secondary amides, aldehydes groups, phenolic acids, aromatic rings, cellulose, polysaccharides and niacin were identified by FTIR in both samples. Ingredient obtained by freeze drying showed better technological characteristics, allowing its use by the food industry.


2020 ◽  
Vol 16 (7) ◽  
pp. 998-1004
Author(s):  
Aziz H. Rad ◽  
Raana B. Fathipour ◽  
Fariba K. Bidgoli ◽  
Aslan Azizi

Background and Objectives: Tea is considered one of the most consumed drinks around the world and the health benefits of it have recently attracted the attention of different researchers. It has also been proven beneficial in preventing the danger of some diseases like cancer and cardiovascular problems. Further, lipid oxidation is one of the major problems in food products. Considering the above-mentioned issues, the present review focused on various techniques used to extract polyphenols from different kinds of tea, as well as their use in the food industry. Results and Conclusion: Based on our findings in this review, the main components of tea are polyphenols that have health benefits and include catechins, epicatechin, epigallocatechin, epicatechin gallate, epigallocatechin gallate, gallic acid, flavonoids, flavonols, and theophlavins. From these components, catechin is regarded as the most beneficial component. Many techniques have been discovered and reformed to extract tea compounds such as solvent-based extraction, microwave-assisted water extraction, and ultrasound-assisted extraction techniques. Overall, the microwave-assisted water extraction method is a useful method for extracting tea polyphenols, which may be used in the meat, oil, and dairy industries.


2020 ◽  
Vol 16 (6) ◽  
pp. 891-899 ◽  
Author(s):  
Wissam Zam

Probiotics are viable microorganisms widely used for their claimed beneficial effects on the host health. A wide number of researchers proved that the intake of probiotic bacteria has numerous health benefits which created a big market of probiotic foods worldwide. The biggest challenge in the development of these products is to maintain the viability of bacterial cells during the storage of the product as well as throughout the gastrointestinal tract transit after consumption, so that the claimed health benefits can be delivered to the consumer. Different approaches have been proposed for increasing the resistance of these sensitive microorganisms, including the selection of resistant strains, incorporation of micronutrients, and most recently the use of microencapsulation techniques. Microencapsulation has resulted in enhancing the viability of these microorganisms which allows its wide use in the food industry. In this review, the most common techniques used for microencapsulation of probiotics will be presented, as well as the most usual microcapsule shell materials.


Author(s):  
Renuka Basavaiah ◽  
Prapulla Siddalingaiya Gurudutt

: The food industry is constantly shifting focus based on prebiotics as health-promoting substrates rather than just food supplements. A prebiotic is ‘‘a selectively fermented ingredient that allows specific changes, both in the composition and/or activity in the gastrointestinal microflora that confers benefits upon host well-being and health.” Prebiotics exert a plethora of health-promoting effects, which has lead to the establishment of multimillion food and pharma industries. The following are the health benefits attributed to prebiotics: mineral absorption, better immune response, increased resistance to bacterial infection, improved lipid metabolism, possible protection against cancer, relief from poor digestion of lactose, and reduction in the risk of diseases such as intestinal disease, non-insulin dependent diabetes, obesity and allergy. Numerous studies in both animals and humans have demonstrated the health benefits of prebiotics.


Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1343
Author(s):  
Lihua Liu ◽  
Chenyi Zhang ◽  
Huimin Zhang ◽  
Guoqiang Qu ◽  
Chun Li ◽  
...  

Apple pomace, the main by-product in apple processing, is a cheap source of bioactive compounds that could be used in the food industry. However, the value of this by-product is still far from being fully realized. In this study, 11 strains of Lactobacillus strains were assayed for β-glucosidase activity, and only Lactobacillus rhamnosus L08 (L. rhamnosus L08) showed high cell-membrane associated β-glucosidase activity. We then evaluated the effects of fermentation of apple pomace using the selected strain, focusing on the biotransformation of polyphenols and antioxidant capacity. We found that L. rhamnosus L08 fermentation significantly reduced the contents of quercitrin and phlorizin in apple pomace, while increasing the contents of quercetin and phloretin. The contents of gallic acid, epicatechin acid, caffeic acid, and ferulic acid were also increased in apple pomace after fermentation. In addition, the antioxidant activities of apple pomace were enhanced during fermentation, based on the bioconversion of phenolic profiles. Our results demonstrate that lactic acid bacteria fermentation is a promising approach to enhance the bioactivity of phenolic compounds in apple pomace. Moreover, this study demonstrates that, as a valuable processing by-product with bioactive components, apple pomace can be used in the food industry to provide economic benefits.


Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 417
Author(s):  
Ioana Otilia Ghinea ◽  
Maria Daniela Ionica Mihaila ◽  
Giorgiana-Valentina Blaga (Costea) ◽  
Sorin Marius Avramescu ◽  
Mihaela Cudalbeanu ◽  
...  

The purpose of this study was to assess the suitability of the Romanian Albanus hybrid of Sorghum bicolor as a potential functional food ingredient. Ultrasound-assisted extraction in different solvents, together with spectrophotometric and chromatographic methods, was used to monitor the variation in total phenolic and flavonoid content and the antioxidant activity of raw sorghum grains before and during short germination periods (24, 36 and 48 h). The High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) investigation of the extracts revealed that the ungerminated sorghum grains extracted with methanol had the highest diversity of phenolic compounds, while the total phenolic content (TPC) was the highest after 36 h of germination in both extract types: 1853 mg GAE/100 g for the methanolic extract and 1726 mg GAE/100 g for the ethanolic extract. The findings of this study showed that the TPC of sorghum extracts is strongly correlated with their antioxidant activity and, overall, that the studied extracts presented a good radical scavenger activity, which supports the benefits of alimentary uses of Sorghum bicolor grains.


Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 518
Author(s):  
Vera Schmid ◽  
Jan Steck ◽  
Esther Mayer-Miebach ◽  
Diana Behsnilian ◽  
Mirko Bunzel ◽  
...  

The partial substitution of starch with dietary fiber (DF) in extruded ready-to-eat texturized (RTE) cereals has been suggested as a strategy to reduce the high glycemic index of these food products. Here, we study the impact of extrusion processing on pure chokeberry (Aronia melanocarpa) pomace powder (CPP) rich in DF and polyphenols (PP) focusing on the content and profile of the DF fractions, stability of PP, and techno-functional properties of the extrudates. Using a co-rotating twin-screw extruder, different screw speeds were applied to CPP with different water contents (cw), which resulted in specific mechanical energies (SME) in the range of 145–222 Whkg−1 and material temperatures (TM) in the range of 123–155 °C. High molecular weight soluble DF contents slightly increase with increasing thermomechanical stress up to 16.1 ± 0.8 g/100 g dm as compared to CPP (11.5 ± 1.2 g/100 g dm), but total DF (TDF) contents (58.6 ± 0.8 g/100 g dm) did not change. DF structural analysis revealed extrusion-based changes in the portions of pectic polysaccharides (type I rhamnogalacturonan) in the soluble and insoluble DF fractions. Contents of thermolabile anthocyanins decrease linearly with SME and temperature from 1.80 ± 0.09 g/100 g dm in CPP to 0.24 ± 0.06 g/100 g dm (222 Whkg−1, 155 °C), but phenolic acids and flavonoids appear to be largely unaffected. Resulting techno-functional (water absorption and water solubility) and physical properties related to the sensory characteristics (expansion, hardness, and color) of pure CPP extrudates support the expectation that granulated CPP extrudates may be a suitable food ingredient rich in DF and PP.


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