Journal of Stored Products Research最新文献

{"title":"Study on antifungal properties of modified chitosan combined with essential oil and its application in preserving fruits","authors":"","doi":"10.1016/j.jspr.2024.102452","DOIUrl":"10.1016/j.jspr.2024.102452","url":null,"abstract":"<div><div>The presence of chemical pesticides has an impact on human health and there is an urgent need for the development of green antifungal alternatives. This study investigated the freshness application of dehydroabietic acid-modified chitosan product (CSDA) mixed with three essential oil (litsea cubeba oil (LCO), wintergreen essential oil (WEO), cinnamon essential oil (CEO)). The antifungal activity of modified chitosan/essential oils was tested by the punching method and the antifungal mechanism was investigated by the transmission electron microscope (TEM). The results showed that fungal inhibition rate of CSDA-WEO on <em>Penicillium digitatum</em> reached 100% at a concentration of 0.05 μL/mL and on <em>Penicillium italicum</em> reached 100% at a concentration of 1 μL/mL. Both molds were not well inhibited by CSDA-LCO and CSDA-CEO. CSDA-WEO was able to affect the cell walls and energy metabolism of the molds, resulting in nutrient loss and death. Fruits were preserved with 0.1 mg/g CSDA and 1 μL/mL WEO. CSDA-WEO maintained the antioxidant activity of <em>citrus</em>, inhibited respiration and water loss, and extended shelf life up to 24 days. CSDA-WEO extended the shelf life of <em>longan</em> to 18 days and <em>kiwi slices</em> to 6 days. CSDA-WEO is expected to serve as an alternative to chemical fungicides and shows promise as a broad-spectrum fruit and vegetable preservative.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural nano-emulsions: A sustainable solution for rice weevil control in stored paddy rice","authors":"","doi":"10.1016/j.jspr.2024.102451","DOIUrl":"10.1016/j.jspr.2024.102451","url":null,"abstract":"<div><div>Nanoemulsion technology offers a promising method to enhance the absorption and effectiveness of various active compounds. This study specifically developed nanoemulsions of frankincense, turmeric, and sesame oil to assess their impact on paddy rice. Notably, there is a lack of research examining both the efficacy and long-term effects of nanoemulsion treatments on rice quality, as most existing studies focus primarily on immediate harmful effects or repellent capabilities without considering prolonged impacts. This research is pioneering in exploring how nanoemulsion treatments influence the physical and chemical properties, nutritional value, and overall quality of paddy rice, as well as their effects on the rice weevil, <em>(Sitophilus oryzae</em> L.<em>, Coleoptera: Curculionidae)</em>. Nanoemulsions were prepared using a high-energy ultrasonication process and characterized by transmission electron microscopy, revealing spherical particles ranging from 27 to 34 nm in diameter. The formulations exhibited kinetic stability, slight acidity (pH 5.0–6.33), and favorable physicochemical properties including zeta potential (−31.6 to −15.2 mV), viscosity (27–34 cP), and surface tension (28.12–53.59 dyne/cm). The nanoemulsions were applied to paddy rice of the Sakha 108 cultivar at concentrations of 500, 1500, and 2000 μL/kg. Over 9 months of storage, the sesame nanoemulsion at 2000 μL/kg significantly improved milling quality (71.78% vs 70.23% in controls), hardness (7.25 N vs 5.40 N), and cooking properties. It also enhanced nutritional content, increasing vitamin B3 to 51.12 mg/kg (vs 44.63 mg/kg in controls), potassium to 1149 mg/kg (vs 1113 mg/kg), and phosphorus to 1133 mg/kg (vs 1064 mg/kg). The nanoemulsions demonstrated robust insecticidal effects against <em>S. oryzae</em>. The turmeric formulation at 2000 μL/kg achieved 100% adult mortality after two weeks and complete inhibition of progeny emergence over 9 months. Sesame and frankincense nanoemulsions at the same concentration resulted in 90% and 83.33% mortality, respectively, after two weeks. These findings demonstrate the potential of nanoemulsion technology as an environmentally friendly alternative to conventional chemical treatments for maintaining rice quality and providing effective pest control during long-term storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal flight activity and associated frequency of rph2 phosphine resistance allele in Rhyzopertha dominica at bulk storage facilities in southern Queensland, Australia","authors":"","doi":"10.1016/j.jspr.2024.102447","DOIUrl":"10.1016/j.jspr.2024.102447","url":null,"abstract":"<div><div>Traps baited with aggregation pheromone lures for the lesser grain borer, <em>Rhyzopertha dominica</em> (F.) were deployed at two bulk grain storage facilities in southern Queensland, Australia from January 2018 to March 2019. This trapping provided data on flight activity in this species as well as sample specimens for screening for the strong phosphine resistance allele (K142E) of the <em>rph2</em> gene. This species is a major pest in Australia where phosphine is the commonly used means of disinfesting stored cereal grains. Therefore, information on infestation pressure from flying beetles and the frequency of resistance genes in these beetles may provide a basis for improved pest and resistance management. <em>Rhyzopertha dominica</em> beetles were trapped at both depots throughout the study, with totals of 3699 and 6683 trapped at the two depots, respectively. Trap catch tended to fluctuate in synchrony at the two depots, with the lowest number caught during winter. There was a total of 15 trapping events during the study and the <em>rph2</em> allele (K142E) was detected in 14 of them. The overall resistance allele frequency was estimated to be 7.4%, and this variant was present in 12.6% of screened beetles from each site, with most of them being heterozygotes (<em>rph2</em>^<em>rs</em>). This study shows that there was a great deal of similarity between the two sites, in relation to flight activity and frequency of <em>rph2</em> alleles (K142E). It also shows the potential for using pheromone trapping as a passive means of collecting <em>R. dominica</em> beetles for monitoring the frequency of phosphine resistance alleles in a typical grain storage environment.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classification and recognition method of rice situation based on gray correlation degree","authors":"","doi":"10.1016/j.jspr.2024.102448","DOIUrl":"10.1016/j.jspr.2024.102448","url":null,"abstract":"<div><div>Grain storage is a complex process, affected by factors such as mold, temperature, humidity, and moisture. The use of multiple sensors to detect changes in rice pile parameters has gained prominence as a means to ensure the accuracy and timeliness of grain condition monitoring. However, the current technology does not effectively utilize data. The assessment criteria primarily rely on grain temperature, and the analysis of grain condition is simplistic. Additionally, it fails to adequately integrate information on temperature, humidity, moisture, gas concentration, and other parameters of the grain pile to form a unified assessment result. To address the isolated and one-sided reaction of various parameters in the grain pile, this thesis conducts research on the storage characteristics of heating, condensation, and mold condition. It combines the information fusion of temperature, humidity, moisture, and CO₂ with normal grain conditions, constructs an assessment model based on the classification and identification of grain conditions under gray correlation, and achieves real-time dynamic assessment of the state of the grain pile. The experimental results show that the assessment model based on gray correlation can accurately discriminate between normal and mold conditions, but the accuracy in distinguishing heating and condensation still requires improvement. The overall recognition rate of the four types of grain conditions is 79%, which demonstrates the effectiveness of the model in identifying abnormal grain states.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the effectiveness of insecticides on storage bag surfaces for managing Callosobruchus maculatus (fabricius) (Coleoptera: Bruchidae)","authors":"","doi":"10.1016/j.jspr.2024.102446","DOIUrl":"10.1016/j.jspr.2024.102446","url":null,"abstract":"<div><div>Incorporating insecticides into storage bags is emerging as an effective strategy for pest management. This study evaluated four insecticides (malathion 50 E.C., lambda-cyhalothrin 5 E.C., spinoteram 11.7 S.C., and azardirachtin 0.15% E.C.) for their contact toxicity against <em>Callosobruchus maculatus</em> adults. The insecticides were applied with LC₅₀ dosage to three different storage bag materials: jute, woven polypropylene (WPP), and 50% polypropylene-reinforced jute. Treatments were sprayed using a glass atomiser in three configurations: both sides treated, insect-exposed side treated, and non-exposed side treated. Twenty insects were exposed to the treated materials in closed Petri dishes, and immediate mortality was assessed at 1, 24, 48, and 72 h post-exposure. The bioassay revealed that all four insecticides achieved the desired mortality (&gt;75%) in <em>C. maculatus</em> adults; spinoteram exhibited the highest mortality in the targeted insect; however, lambda-cyhalothrin was notably effective at a lower dosage (1.10 ppm) and shorter exposure time. The efficacy of the insecticides depended on the porosity of the storage bag material. Woven polypropylene bags treated on both sides exhibited the highest mortality (76–100%) among various treatment combinations. Miniature bags (21 × 16 cm) made of selected fabrics were treated with lambda-cyhalothrin (1.1 ppm) to assess their ability to contain <em>C. maculatus</em> infestation. The insects could not penetrate the WPP bag, while jute offered less resistance. The study suggests that applying all four insecticides at LC₅₀ dosages on various storage bag materials could be an effective management practice against <em>C. maculatus</em> adults. However, the application of lambda-cyhalothrin can achieve the desired results at lower concentrations.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chilled paddy rice grains applied directly to industrial processing have a better head rice yield","authors":"","doi":"10.1016/j.jspr.2024.102436","DOIUrl":"10.1016/j.jspr.2024.102436","url":null,"abstract":"<div><div>Rice is important for food security around the world, and the search to minimize losses and obtain the highest rate of head yield grains during processing is a recurring demand. In this context, the aim of this study was to understand the impact of grain conditioning temperature, when subjected directly to husking and polishing, on head rice yield. For this purpose, commercial brown rice grains from two locations and red rice grains from one location in the state of Rio Grande do Sul were studied. The grains were stored at temperatures of 15 °C, 20 °C, 25 °C and 30 °C. The following comparisons were made: a) Unhusked grain: Rice in the husk stored at different temperatures for 7 days and husked; b) Polished: Rice in the husk stored at different temperatures for 7 days, husked and stored for a further 7 days at different temperatures and polished; and c) Complete polished: Rice in the husk stored at different temperatures for 7 days, husked and polished in immediate sequence. The head yield of whole and polished grains was quantified according to the above tests. The results show that for both brown and red rice, storage at 15 °C, when subjected directly to the husking and polishing stages, represents a higher yield head rice, about 1.7% in polished grains when comparing 15 and 30 °C, possibly due to the increased hardness of the grains, as verified by the texture, with a financial impact of approximately R$ 540 million on the Brazilian rice market.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodegradable soy protein isolate carvacrol coating controls soft rot on nectarines by enhancing defense response","authors":"","doi":"10.1016/j.jspr.2024.102444","DOIUrl":"10.1016/j.jspr.2024.102444","url":null,"abstract":"<div><div>Nectarine fruits are rich in nutrients, which are susceptible to fungal infection during postharvest, resulting in quality deterioration and decay. This study aimed to assess the effect of different concentrations of carvacrol and soy protein isolate coatings on the fungal infection and quality characteristics of nectarines during postharvest storage. The results showed that soy protein isolate carvacrol (SPI-C) coating inhibited the growth of <em>Rhizopus stolonifer</em> in vitro. The SPI-C coating significantly reduced the incidence of postharvest soft rot, maintained the postharvest quality of nectarines during storage. SPI-C coating induces the defense response to soft rot by enhancing the accumulation of phenolic, flavonoids and lignin, and up-regulating the expression of defense-related genes in nectarines. The SPI-C coating activated the transcription of antioxidant enzymes (CAT, SOD and POD) and eliminated ROS damage. The disease resistance response promotes the production of defense-related substances by upregulating the gene expression of <em>PpPPO</em> and <em>PpPAL</em>. In summary, SPI-C coating significantly reduces the incidence of postharvest soft rot, maintains the postharvest quality and induces defense response to soft rot by enhancing the expression of genes involved in phenylpropanoid metabolism in nectarines during storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of storage temperature and time on the microbial quality and sensory properties of extrudates produced from pearl millet (Pennisetum glaucum (L) Leake) and Bambara groundnut (Vigna subterranea) flour blends","authors":"","doi":"10.1016/j.jspr.2024.102442","DOIUrl":"10.1016/j.jspr.2024.102442","url":null,"abstract":"<div><div>This study investigates the impact of storage conditions (temperature and time) on the microbial quality, moisture content, and sensory attributes of extruded puffed snacks formulated from blends of pearl millet flour and Bambara groundnut flour. Puffed snacks were prepared from seven flour blends made from pearl millet and Bambara groundnut in a proportion of 20:80, 30:70, 40:60, 50:50, 60:40, 70:30, and 80:20, respectively, while 100% pearl millet and 100% Bambara groundnut flours were used as control. The extrudates were processed using a twin screw extruder, packed in aluminium laminate, and stored at two separate temperatures (28 ± 2 and 37 ± 2°C). After that, microbial analysis was conducted biweekly for 5 months, moisture content and sensory analysis were conducted once a month for four months and five months respectively. Our findings revealed an increase in total bacterial counts over the storage period, ranging from 1.00 to 6.84 CFU/g and 1.00–7.11 CFU/g at 28 and 37 °C, respectively. Fungal counts varied from 0.00 to 4.08 spores/g and 0.00–4.48 spores/g for snacks stored at 28 and 37 °C, respectively. The mean moisture gains for snacks stored at 28 and 37°C were 0.86 and 0.89%, respectively. Furthermore, the sensory parameters decreased as the storage period progressed, with the snacks' overall acceptability ratings increasing from 2.38 to 7.71 as the pearl millet percentage increased. Extruded samples M₉ (100% pearl millet) and M₈ (80% pearl millet and 20% Bambara groundnut) have the fewest bacterial counts, while samples M₁ (100% Bambara groundnut) and M₂ (20% pearl millet and 80% Bambara groundnut) have the least fungal counts. The sensory evaluation showed a preference for snack M₉ followed by snack M₈. The findings of this study will offer valuable insights to the food industry regarding storage strategies aimed at improving the safety and sensory attributes of products made from pearl millet and Bambara groundnut.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel encapsulation method for lemongrass essential oil in nanoemulsion and SiO2 nanoparticles against the storage mite Aleuroglyphus ovatus (Acari: Acaridae)","authors":"","doi":"10.1016/j.jspr.2024.102443","DOIUrl":"10.1016/j.jspr.2024.102443","url":null,"abstract":"<div><div>Lemongrass essential oil (LEO), which is extracted from <em>Cymbopogon citratus</em>, has emerged as a promising alternative to traditional synthetic pesticides. In the present study, we fabricated pure LEO and its nanomaterials (nanoemulsion [NE] and SiO₂ nanoparticles [NPs]) and investigated their acaricidal effects on <em>Aleuroglyphus ovatus</em> (Acari: Acaridae), a common storage pest mite. A loading capacity (LC) of 57.45% was obtained, showing successful encapsulation of LEO in SiNPs. The contact mortality, fumigant mortality, ovicidal activity, repellent activity, and toxic effects of LEO on <em>A. ovatus</em> were investigated. The median lethal concentration (LC₅₀) values of contact mortality of LEO, LEO-NE, and LEO-SiNPs against adult mites were 0.067, 0.053, and 0.019 mg/cm², respectively, after 24 h of exposure. Similarly, the corresponding LC₅₀ values of fumigant activity were 0.044, 0.096, and 0.067 mg/cm³, respectively. All products had greater contact and fumigant effects on nymphs and larvae than they did on adults. After 5 days of exposure to the products, LEO-NE and LEO-SiNPs had greater inhibitory effects on hatching than did pure LEO. LEO-SiNPs exhibited a rapid and significant repellent effect at 3 h (82.22%) and were effective even after 24 h (35.56%), indicating their persistent and long-term acaricide activity. A study of toxicity symptom revealed two different manifestations of toxicity in mites after exposure to these products (knock-down type and immobilized type). Taken together, these findings suggest that LEO and its nanomaterials exhibit significant acaricidal activity against <em>A. ovatus</em>.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spraying glycine betaine on fresh pistachio fruits (Pistacia vera L.) for preservation in cold storage","authors":"","doi":"10.1016/j.jspr.2024.102445","DOIUrl":"10.1016/j.jspr.2024.102445","url":null,"abstract":"<div><div>Oxidative stress occurs during storage, often leading to a decrease in fruit quality and subsequently reducing its marketability. In this investigation, the ability of glycine betaine (GB) to extend the quality and storage of fresh pistachios stored in cold conditions was evaluated. The independent variables in this study were the concentration of GB (0, 5, 10 and 15 mM) and storage period (at harvest, 25, 50, and 75 days after harvest). Over time, the chlorophyll and carotenoid content of both kernels and hulls, as well as phenolics, flavonoids, antioxidant activity, taste, aroma, appearance of shells and hulls, firmness, and overall weight, tend to decrease. However, glycine betaine (GB) significantly prevents these reductions. GB effectively countered the rise in malondialdehyde, ion leakage, and hydrogen peroxide levels in kernels over time. In GB-treated samples, anthocyanin levels initially increased when comparing harvest time in both kernels and hulls, but subsequently decreased. GB enhanced peroxidase activity and suppressed polyphenol oxidase activity. However, contrary to expectation, GB reduces phenylalanine ammonia lyase activity. Overall, higher GB concentrations lead to a more pronounced effect. Based on the results, GB, particularly at a concentration of 15 mM, is recommended for preserving fresh pistachios during cold storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}