Use Of Natural Antioxidants Research Articles

Effects of Eucommia ulmoides Leaf Extract on the Technological Quality, Protein Oxidation, and Lipid Oxidation of Cooked Pork Sausage During Refrigerated Storage

The present research work was based on evaluating the effects of Eucommia ulmoides leaf extract (EULE) on the technological quality and protein oxidation of cooked pork sausage during refrigerated storage. Sausages were manufactured with different levels of EULE (0, 0.15, and 0.3 g/kg) and stored at 4 °C for 3, 20, and 40 d, respectively. Quality attributes including cooking loss, texture, and color were evaluated, and the total carbonyl and total sulfhydryl as well as the specific markers α-aminoadipic acid semialdehyde (AAS) and lysinonorleucine (LNL) were analyzed for protein oxidation. The results revealed that the inclusion of EULE exhibited effectiveness in reducing the formation of protein carbonyls, particularly AAS and LNL, while inhibiting the loss of total sulfhydryl. Nevertheless, EULE increased the cooking loss, hardness, and chewiness of the sausages compared to the control group. These findings demonstrated that EULE could be considered a potential natural antioxidant for use in sausage production.

Exploring the Antioxidant Potential of Fagopyrum esculentum Moench (Common Buckwheat) Leaf Extract

This study was conducted in 2022 at the Department of Molecular Biology and Genetic Engineering, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India. The objective was to assess the antioxidant potential of the hydromethanolic leaf extract of Fagopyrum esculentum Moench (common buckwheat) by evaluating its reducing power and metal ion chelation abilities. Leaves of Fagopyrum esculentum were collected from the Pithoragarh district in Uttarakhand and authenticated. A 50% hydromethanolic extract (FEE) was prepared from the powdered leaves. The antioxidant potential of FEE was assessed using reducing power and metal ion chelation tests. The hydromethanolic extract yielded 7.17%. FEE exhibited significant antioxidant activity in a concentration-dependent manner, demonstrating both electron-donating ability and metal ion chelation capacity with an IC50 value of 108.846 µg/ml. These results highlight the potential of F. esculentum leaf extract as a natural antioxidant for use in the pharmaceutical, cosmetic, and food industries. Further studies are recommended to investigate its effects In vivo.

Going on the methods used for Extending the food shelf life by aid of Natural antioxidants

The Meat products types are highly nutritious foods, as they are sources of the proteins, fats, vitamins, and minerals. Due to their chemical characteristics and modifications resulting from processing, the meat products types are very susceptible to oxidation and microbial contamination, which justifies the use of the various food additives, such as antioxidants and preservatives, represented mainly by synthetic compounds whose consumption is related to several health risk factors. Therefore, there is an urgent need to replace these substances, and bioactive phytochemicals appear as a promising alternative. In this chapter, we discuss various aspects related to the use of natural antioxidants in the meat products types, comprehending the chemical composition of the meat and its derivatives, their oxidative processes, the toxic compounds due to oxidation, the use of natural antioxidants, and the other observed effects of isolated compounds, extracts, and essential oils, such as the antimicrobial activity, demonstrating their potential in reducing the use of the synthetic food additives.

Dietary supplementation with rosemary essential oil improves genital characteristics, semen parameters and testosterone concentration in Barki rams

BackgroundMale reproductive performance is an essential part of sheep production; therefore, the use of natural antioxidants to improve sperm quality and maintain reproductive performance in males is very important. Hence, oral administration of rosemary essential oil (REO) was investigated to improve the fertility rate, including the ultrasonographic testes, epididymal tail and genital glands, as well as semen parameters and testosterone concentration. Sixty animals were splitted into two groups, each with 30 rams; the rosemary group (C + REO) received 2 mg/kg/bw and the control group (C-REO). Ultrasound images and blood samples were collected at 15, 30 and 45 days of the REO treatment.ResultsThe testis and epididymal tail ultrasonographic assessments demonstrated a significant enhancement in the C + REO group compared to the C-REO group. However, the rams in the C + REO group showed significant improvements in the pampini-form plexus, seminal vesicle, Cowper's and prostate genital glands compared to the C-REO group. The data showed that the sperm cell concentration (× 109/ml) and individual motility (%) were significantly improved in the C + REO group. Furthermore, ejaculate volume (ml) in the C + REO group was significantly higher than that in the C-REO group. While the animals treated with REO did not improve live spermatozoa (%), it reduced the abnormalities of spermatozoa (%) compared to the C-REO group. Also, the C + REO group significantly increased the testosterone concentration more than the C-REO group.ConclusionIt can be concluded that supplementation with 2 mg/kg/bw REO improves genital characteristics, semen parameters and testosterone concentration in Barki rams.

Therapeutic Effect of Nano-Extract of Nigella Sativa Seeds on The Histological Structure of The Testis In Male Albino Rats Induced With Anemia

Background: The study explores the effect of nanoparticles derived from the aqueous extract of Nigella sativa seeds on the histological structure of the testis in male albino rats with tartrazine-induced anemia. Nanoparticles, ranging in size from 1 to 100 nanometers, possess unique physical and chemical properties that enhance their ability to interact and deliver drugs. Objective: This study focuses on the therapeutic potential of Nigella sativa seed extract nanoparticles in treating testicular histological changes in anemic rats. The testicle is an oval organ involved in sperm formation and hormone production. It contains seminiferous tubules, Sertoli cells, and Leydig cells, which are responsible for sperm production and testosterone synthesis. Methods: The study included 36 male albino mice, aged between 8-12 weeks, and weighing 240-260 grams, from the Iraqi Center for Cancer Research and Medical Genetics. The animals were divided into six groups, each group having six animals. Results: The study showed that tartrazine at a concentration of 20 mg/kg: with Nigella sativa nanoparticles 50 mg/kg: an increase in weight. the body. While tartrazine at a concentration of 20 mg/kg with N.sativa nanoparticles at 75 mg/kg did not show significant differences compared with the control group. The results showed the Nigella sativa seed nanoparticles at a concentration of (50 mg/kg, 75 mg/kg): showed an increase in body weight, while tartrazine at a concentration of 20 mg/kg: a decrease in body weight, and no significant changes were observed in testicle weight in all treatments compared with the control group. Non-significant changes in testicle weight compare with Control group. The study showed that treatment with tartrazine 20 mg/kg showed noticeable histological changes in the histological structure of the testicle. Tartrazine with N.sativa nanoparticles (50 mg/kg, 75 mg/kg): No histological changes, indicating attenuation of tartrazine-induced damage. N.sativa nanoparticles (50 mg/kg, 75 mg/kg): demonstrated normal composition of testicular tissue, indicating no harmful effects on testicular tissue. has protective effects. Conclusion:The study aimed to investigate the potential of using nanoparticles extracted from Nigella sativa seeds to protect against damage caused by tartrazine in male albino rats.with significant therapeutic implications for the use of natural antioxidants in biomedical applications.

Innovative approaches to enhancing meat product integrity with natural antioxidants and encapsulation

The quality and stability of meat products are crucial for consumer acceptance and safety. Lipid oxidation, color changes, and microbial spoilage are primary factors affecting meat quality, leading to a reduction in shelf life and nutritional value. Natural antioxidants have emerged as promising alternatives to synthetic antioxidants due to their safety and health benefits. However, their application is limited by their stability and efficacy under various processing and storage conditions. Encapsulation techniques have been developed to enhance the stability and controlled release of natural antioxidants in meat products. This review provides an overview of the latest advancements in the use of natural antioxidants and encapsulation technologies to improve meat product quality and stability. Recent studies, their outcomes, and future perspectives are discussed.

Whole tomato lipidic extract improved sperm quality in obese rats induced by a high-carbohydrate diet.

Obesity represents a risk in the development of metabolic and oxidative stress (OS), as well as in male infertility. There is still no pharmacological treatment for obesity-induced male infertility, but the use of natural antioxidants has been proposed as a treatment. The aim of this work is to evaluate the effect of a whole tomato lipid extract on rats that decreased their fertility and spermatogenesis after being induced obese with a high carbohydrate diet. One hundred fourteen male Wistar rats of 12weeks of age were used. Two groups were randomly formed non-obese control group (C, n=54) and obese group (Ob, n=54) that received 30% w/v sucrose solution for 3 months. Subsequently, the C and Ob group were divided into two groups: vehicle (C-Vh and Ob-Vh) that received corn oil as vehicle and tomato lipid extract (C-Ex and Ob-Ex) that received whole tomato lipid extract. The groups that received a hypercaloric diet had a gain in visceral and retroperitoneal adipose tissue, an increase in total cholesterol and triglyceride levels, increased OS in the testis, and lesions in testicular histology, as well as a reduction in testicular size and sperm quality parameters (motility, viability, and concentration). Treatment with whole tomato lipid extract significantly decreased the weight of gonadal adipose tissue and OS, maintained testicular size, showed a significant increase in sperm quality parameters and improved histology of seminiferous tubules. These results demonstrate a greater therapeutic and beneficial effect of the tomato lipid extract on sperm quality parameters in obese rats and therefore on fertility.

Antioxidant and antimicrobial activities of Myrtus communis essential oils in cold-stored lactic butter.

The use of natural antioxidants and antimicrobials in dairy production can increase the variety of dairy-based products. In this study, the antioxidant and antimicrobial changes in lactic butter samples made from heat-treated creams and enriched with M. communis essential oils (EOs) were investigated. The best lactic butter properties were achieved by optimizing the process at 70 and 80 °C. M. communis EOs decreased lipid oxidation and spoilage microorganism growth in lactic butter during cold storage. M. communis EOs have antioxidant and antimicrobial activity in lactic butter equal to that of ascorbyl palmitate. α-Pinene, p-cymene, limonene, 3-carene, 1,8-cineol, β-linalool, α-terpineol and myretenol are the major contributors to the antioxidant and antimicrobial activities of M. communis EOs. They exhibit antioxidant activity by neutralizing free radicals by donating hydrogen or acting as termination enhancers, and antimicrobial activity by disruption of cell membranes, which may result in the leakage of macromolecules or the loss of essential metabolites, ultimately leading to cell death during the storage of lactic butter samples. The addition of M. communis EOs improves lactic butter stability equal to that of ascorbyl palmitate, and may be applied as a natural and effective preservative to maintain butter from lipid oxidation and microbial spoilage and enhance its safety. The growing recognition of the health benefits of natural antioxidants, as opposed to synthetic ones, has led to the development of new applications for natural antioxidants. In this regard, M. communis L. EOs can be used to enhance the shelf stability of cold-stored lactic butter. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Phytochemical screening, antioxidant, and cytotoxic activities of sequentially extracted Euclea natalensis leaf extracts

Phytochemical screening, antioxidant, and cytotoxic activities of sequentially extracted Euclea natalensis leaf extracts

Evaluation of antioxidant and antimicrobial activity of peppermint, ginger and rosemary extracts

Chemical spoilage of food products can lead to consumer rejection of the product. Therefore, the use of natural antioxidants is of wide importance and potential use to prevent oxidation of nutrients in food products and subsequently maintain the quality of the products and extend shelf life. The present work focuses on the evaluation of the antioxidant power of peppermint, ginger and rosemary. Peppermint extract showed a highest phenolic content (264.74±12.35 mg GAE/g) followed by ginger (101.31±0.89 mg GAE/g) and rosemary (126.58±0.67 GAE/g) while, while rosemary extract has a highest flavonoids content (169±0.11 mg/g) and the peppermint showed the least content (56.35±0.31 mg/g). The highest antioxidant activity presented by rosemary extract with IC50 = 24.5 μg/ml followed by peppermint extract with IC50:109.7 μg/ml) and ginger extract with IC50 = 536 μg/ml. HPLC profile showed 13 different phenolic compounds with high concentration of ellagic acid, rutin, p-hydroxybenzoic acid in rosemary extract. while ellagic acid showed the highest concentration in both ginger and peppermint extract. All tested extracts showed good antimicrobial activities against different pathogens with varying inhibition diameters. Peppermint, ginger and rosemary extracts have high potential for use in food production as natural preservatives.

Evaluation of antioxidant potential of crude extract of metabolites from endophytic fungi isolated from <i>Annona senegalensis</i> Pers

Degenerative diseases resulting from free radicals can be prevented through the use of natural antioxidants. This study aimed to assess the free radical scavenging potential of the underexplored endophytic fungal metabolites from Annona senegalensis Pers (wild custard apple). Freshly collected root, midrib, and leaf tissues were planted on malt extract agar following surface sterilization with 70% ethanol for 3 minutes, washed twice with distilled water, immersed in a sodium hypochlorite solution (4%) for 5 minutes, and subsequently rinsed with sterile water. Seven endophytic fungi were isolated, and the antioxidant activity of their metabolites was evaluated using the 2,2- diphenyl-1-picrylhydrazyl free radical scavenging method, with ascorbic acid serving as a reference antioxidant. The crude extract from the seven endophytic fungal isolates demonstrated concentration- dependent antioxidant activities. LB2 exhibited a strong antioxidant activity with an IC50 value of 38.15 μg/ml. Extracts from RT1 and LB1 showed antioxidant activities, with the highest inhibition of 60% and 65%, respectively, observed at a concentration of 1000 μg/ml. This was compared favorably to ascorbic acid, which exhibited 94% inhibition. This indicates that the crude extract from endophytic fungi isolated from A. senegalensis possesses free radical scavenging properties. Further purification and elucidation of the crude extract will reveal the bioactive compounds responsible for the antioxidant activities.

Optimisation of polyphenol extraction for the valorisation of spent gin botanicals

Optimisation of polyphenol extraction for the valorisation of spent gin botanicals

Chronic Stress as a Risk Factor for Type 2 Diabetes: Endocrine, Metabolic, and Immune Implications.

Chronic stress is a condition of pressure on the brain and whole body, which in the long term may lead to a frank disease status, even including type 2 diabetes (T2D). Stress activates the hypothalamus-pituitary-adrenal axis with release of glucocorticoids (GCs) and catecholamines, as well as activation of the inflammatory pathway of the immune system, which alters glucose and lipid metabolism, ultimately leading to beta-cell destruction, insulin resistance and T2D onset. Alteration of the glucose and lipid metabolism accounts for insulin resistance and T2D outcome. Furthermore, stress-related subversion of the intestinal microbiota leads to an imbalance of the gut-brain-immune axis, as evidenced by the stress-related depression often associated with T2D. A condition of generalized inflammation and subversion of the intestinal microbiota represents another facet of stress-induced disease. In fact, chronic stress acts on the gut-brain axis with multiorgan consequences, as evidenced by the association between depression and T2D. Oxidative stress with the production of reactive oxygen species and cytokine-mediated inflammation represents the main hallmarks of chronic stress. ROS production and pro-inflammatory cytokines represent the main hallmarks of stress-related disorders, and therefore, the use of natural antioxidant and anti-inflammatory substances (nutraceuticals) may offer an alternative therapeutic approach to combat stress-related T2D. Single or combined administration of nutraceuticals would be very beneficial in targeting the neuro-endocrine-immune axis, thus, regulating major pathways involved in T2D onset. However, more clinical trials are needed to establish the effectiveness of nutraceutical treatment, dosage, time of administration and the most favorable combinations of compounds. Therefore, in view of their antioxidant and anti-inflammatory properties, the use of natural products or nutraceuticals for the treatment of stress-related diseases, even including T2D, will be discussed. Several evidences suggest that chronic stress represents one of the main factors responsible for the outcome of T2D.

Nutrigenomics of Natural Antioxidants in Broilers.

The broiler industry supplies high-quality animal protein to the world. The ban of antibiotics as growth promoters has opened the way for plenty of phytochemicals and antioxidants to be explored. This study summarizes the use of natural antioxidants in a broiler diet as a way through which to deal with stressors, as well as their effects on the expression of various genes. The transcriptional factors and genes involved in the regulation of redox homeostasis are described and emphasis is placed on nuclear factor erythroid 2-related factor 2 and nuclear factor kappa B. Sources such as fruits, vegetables, spices, mushrooms, and algae contain numerous natural antioxidant compounds. The antioxidant activity of these compounds has also been confirmed at the genome level. This study focuses on the regulation of oxidative stress-related genes, as well as on genes that regulate the inflammatory response, apoptosis, response to heat stress, lipid metabolism, and the intestinal barrier status. The natural compounds presented include, but are not limited to, the following: rutin, lycopene, magnolol, genistein, hesperidin, naringin, quercetin, curcumin, bisdemethoxycurcumin, resveratrol, astaxanthin, squalene, pterostilbene, protocatechuic acid, taraxasterol, myricetin, and proanthocyanidins. Several studies have revealed a dose-dependent action. Future studies should focus on the role of phytogenic compounds as antibiotic alternatives in relation to gut microbiota and their role in eubiosis.

Supplementation of extender with chamuangone-enriched Garcinia cowa leaf extract improves quality parameters and longevity of cold-stored cat semen

BACKGROUND: Semen preservation by cooling is less expensive, simpler and results in less sperm damage than freezing does. However, spermatozoa can only be preserved for a short period due to the excessive formation of reactive oxygen species (ROS). Although several antioxidants can protect sperms from ROS damage during storage at low temperatures, the use of natural antioxidants derived from plants would be a better alternative. OBJECTIVE: To assess the effects of chamuangone, which can reduce oxidation reactions in cells, on cat semen quality after preservation at 4°C for 15 days. MATERIALS AND METHODS: Epididymal sperm samples were collected before being diluted with tris-citric-fructose-egg yolk (TCFE) extender containing different concentrations of chamuangone (0, 50, 100, 150 and 200 μg/mL) and preserved at 4°C. Semen samples were evaluated before chilling and then every 3 days after chilling for up to 15 days. Each sample was assessed for sperm motility, viability, DNA integrity, plasma membrane integrity and percentage of spermatozoa with intact acrosomes. RESULTS: A significantly higher sperm motility was observed in the group supplemented with 100 μg/mL chamuangone compared to the control after 6 days of storage. However, the chamuangone concentration at 200 μg/mL did not significantly increase the sperm motility when compared to the control for the entire storage period. CONCLUSION: 100 μg/mL chamuangone can improve sperm characteristics during 15 days of preservation at 4°C, keeping sperm alive (49.3 ± 5.2%) and moving (7.1 ± 2.4%). These results can be used for the development of breeding programs using technologically advanced reproductive procedures in domestic and wild cats.

Результаты выращивания молоди тиляпии на продукционных комбикормах с добавлением антиоксиданта астаксантина

One of the main stages of metabolism in the body is the digestibility and digestibility of feed nutrients, the ef-fectiveness of which to a certain extent depends on the use of biologically active substances in diets that have antioxidant properties and have a stimulating effect on vital body functions. An important criterion for choosing feed additives is their environmental safety. An ideal antioxidant should be easily absorbed by the body and prevent the formation of free radicals at physiologically significant levels. Therefore, the use of natural antioxidants, namely carotenoids, is of particular interest. Carotenoids play a different role in the metabolism of fish and are also pronounced antioxidants that protect the body from the action of free radicals. The experience of using the natural antioxidant astaxanthin in feeding tilapia juveniles is considered. Astaxanthin is a powerful antioxidant that has a huge impact on the functioning of all systems and overall health. But the practice of its use has not affected mass thermophilic aquaculture species, such as tilapia, whose muscle tissues and caviar are not stained under the action of astaxanthin, and its effect on the physiological status of fish, as well as antioxidant properties have not been studied. It was found that the addition of astaxanthin to the composition of production feeds at a dosage of 20.0; 30.0; 40.0 mg/kg allowed to increase productivity by 38.5; 30.1; 17.03%, respectively, and also had a positive effect on the physiological state of the fish. As a result, after feeding, the indicators of total protein in the experimental variants 1-3 were higher than the control group by 48.3; 41.6 and 31.6%, respectively. As a result of the analysis of the data obtained after the completion of experimental work, a significant increase in the level of hemoglobin concentration in experimental variants 1-3 was established by 1.2-1.3 times, respectively, compared with the control variant.

Evaluation of natural extracts’ antioxidant capacity for controlling fresh sausage oxidation

Lipid oxidation impacts the quality and shelf life of meat products. The use of natural antioxidants is an alternative to delay their oxidative deterioration. This study aimed to determine the antioxidant activity of natural extracts and evaluate the viability of replacing 2,3-tert-butyl-4-hydroxyanisole (BHA) in fresh sausages. Both tocopherols and grape seed extract showed similar antioxidant activity to BHA through the 2,2-diphenyl-1-picryl-hydrazyl-hydrate free radical (DPPH) and ferric reducing antioxidant power (FRAP) methods. The effectiveness of these antioxidants applied to fresh sausage was evaluated during 15 days of storage at 4.0ºC under light incidence. The results indicated a pro-oxidant effect of grape seed extract (with 6.74% acidity and 2.74 mg MDA kg sample-1 thiobarbituric acid reactive substances (TBARS)) and showed the viability of replacing BHA with tocopherols. Tocopherols had a lower peroxide value (3.07 mE O2 kg-1) than the control (11.40 mE O2 kg-1), with no difference in TBARS or acidity content compared to BHA, and the lowest total mass loss (18.22%).

Use of natural antioxidants in feeding broiler chickens

. Compounded feed is the most significant part of the pricing structure for poultry meat. It is essential to satisfy the physiological needs of the bird as much as possible by selecting the optimal composition and characteristics of the meal, which, in turn, directly depends on the quality of its components. In this regard, an urgent problem is using antioxidants to improve feed safety and optimise metabolism in the poultry body. Feed additives from plants with a high content of them in the diet can increase the efficiency of poultry rearing without compromising the quality of the product. In connection with the prospect of growing domestically produced poultry meat exports, obtaining environmentally friendly products with minimal use of veterinary drugs and chemical-based feed additives is becoming increasingly essential. The use of natural antioxidants is another step towards achieving this goal. This article reflects on the issue of using plant extracts in feeding poultry, the effect of including various additives on live weight, safety and efficiency of feed use. This work was carried out in three stages: developing a method for obtaining a feed additive, a scientific and economic experiment and a statistical data analysis. The first stage of research took place in laboratory conditions. A liquid cocoa husk extract was obtained by continuous percolation with an ethyl alcohol solution, which was then dried at low pressure and a temperature of 30–35 ºC. The second stage of the research was conducting a scientific and economic experiment on 250 heads of broiler chickens. The analysis of the results confirmed the effectiveness of using the plant extract in feed for poultry meat production.

The Potential of Underutilized Plant Resources and Agricultural Wastes for Enhancing Biodiesel Stability: The Role of Phenolic-Rich Natural Antioxidants

Growing concerns about energy security and environmental sustainability have fueled demand for sustainable and renewable energy sources in recent years. Biodiesel, a renewable alternative to conventional fuels, has gained significant attention as a potential source of energy. However, the stability of biodiesel during storage and its susceptibility to oxidation remain major challenges. To address these issues, researchers have turned their focus to the utilization of natural antioxidants. Studies on sources of natural antioxidants, particularly those made from waste, such as food, have been extensively conducted. However, there are still some restrictions, such as inconsistency in quality, the development of microbes, and difficulties with regulations, all of which have an impact on sustainability and the phenolic contents. Phenolic compounds are known for their excellent antioxidant properties and ability to inhibit the oxidation process. The review provides an overview of various underutilized plant resources and agricultural wastes that are rich in phenolic contents and demonstrate higher antioxidant activities, such as Vitex doniana, Uapaca kirkiana, Parinari curatellifolia, Tamarindus indica L, fruit peels, and crop residues. It discusses the extraction methods employed to obtain phenolic antioxidants from these sources and highlights their antioxidant activities. Additionally, the review examines the effects of phenolic antioxidants on key parameters, including induction period, peroxide value, acid value, and viscosity. The review concluded by highlighting the potential of underutilized plant resources and agricultural wastes as sustainable sources of phenolic-rich natural antioxidants for enhancing biodiesel stability. According to the literatures, phenolic antioxidants present in underutilized plant resources and agricultural wastes can chelate metal ions, scavenge free radicals, and break oxidation chain reactions, thereby preventing the degradation of biodiesel. Moreover, the limitation of the use of natural antioxidants in the stabilization of biodiesel like instability at high temperatures has been highlighted.

Comparative evaluation of drying characteristics and antioxidant quality of raspberry by different drying methods

AbstractFour drying methods, hot air drying (HAD), microwave constant temperature drying (MWD), microwave vacuum temperature‐controlled drying (MIVD‐T50), and freeze drying (FD), were investigated for their effects on raspberries in terms of drying time, color, microstructure, rehydration, water activity, phenolic compounds, flavonoids, anthocyanins, and DPPH scavenging ability. It was found that microwaves combined with vacuum took the shortest time. The color of MIVD‐T50 is similar to that of FD and much better than that of HAD and MWD. A smooth surface and fluffy and porous structure inside were observed in the FD and MIVD by scanning electron microscopy (SEM) images. FD has the highest energy consumption, followed by HAD, MIVD‐T50 and MWD. The retention rates of total phenols and flavonoids in HAD, MWD and FD were lower than those in MIVD‐T50, and FD had the advantage of retaining anthocyanin content. In general, MIVD‐T50 has significance for the commercial production of raspberry.Practical applicationsThe use of natural antioxidants in food processing not only enhances the shelf life of products but also improves their nutritional value. Raspberry is a rich source of antioxidants and is widely used in food processing. However, the drying process is crucial in preserving its antioxidant quality, and different drying methods affect the antioxidant content differently. According to the results of the experiments, the drying method has a considerable impact on the energy usage and quality of dried raspberries. Compared with the HAD and MWD treatments, both FD and MIVD‐T50 showed better nutrient content preservation and antioxidant activity, which may be caused by the lower temperature drying process of FD or the stronger efficiency of MIVD‐T50. However, the drying time of FD is longer, and the energy consumption is higher. Therefore, MIVD‐T50 is a promising raspberry drying technology with low energy consumption, a short drying time, and high quality. It has huge development potential and broad commercial scale production market prospects.