Edible mushrooms as a potent therapeutics of subclinical thyroid dysfunction among adults,especially in obese individuals:a prospective cohort study

Background:Mushrooms are a good source of many nutrients which are potentially beneficial for chronic diseases.We speculated that due to its abundant nutrients edible mushrooms might have a beneficial effect on the prevention of subclinical thyroid dysfunction(SCTD).Therefore,we designed a large-scale cohort study to examine whether mushrooms consumption is a protective factor for SCTD in adults.Methods:This prospective cohort study investigated 6631 participants(mean age:(45.0±10.2)years;55.1%men).Edible mushrooms consumption was measured at baseline using a validated food frequency questionnaire.SCTD was defined as abnormal serum thyroid-stimulating hormone levels and normal free thyroxine.Cox proportional hazards regression models were used to examine the association of edible mushrooms consumption with incident SCTD.Results:During follow-up period,a total of 262 new cases of SCTD were identified,the incidence rate of subclinical hypothyroidism was 8.9/1000 person-years and subclinical hyperthyroidism was 7.2/1000 person-years.After adjusting potential confounding factors,the multivariable hazard ratios(95%confidence intervals)for subclinical hypothyroidism were 1.00(reference)for almost never,0.53(0.29,0.97)for 1-3 times/week and 0.30(0.10,0.87)for≥4 times/week(P for trend=0.02).It also showed edible mushrooms consumption was inversely associated with subclinical hypothyroidism in obese individuals but not non-obese individuals,the final hazard ratios(95%confidence intervals)were 0.14(0.03,0.73)(P for trend<0.01).Conclusions:This population-based prospective cohort study has firstly demonstrated that higher edible mushrooms consumption was significantly associated with lower incidence of subclinical hypothyroidism among general adult population,especially in obese individuals.

Mini-review on edible mushrooms as source of dietary fiber:Preparation and health benefits

Dietary fiber and high-fiber food products have attracted great attention because of their significant health benefits to consumers.Mushrooms are valuable resources for food,medicine and nutraceuticals.Edible mushroom is considered as a novel source of dietary fiber.The dietary fiber content and composition in edible mushroom vary greatly with its morphological stages including fruit body,mycelium and sclerotium.The focus of this mini-review is on the preparation of dietary fiber from edible mushroom with emphasis on the sclerotium which has the highest level of non-starch polysaccharides.The possible health benefits of mushroom dietary fiber in relationship with boosting the immune system,anticancer functions as well as the control of blood lipids and glucose levels are also discussed.©2013 Beijing Academy of Food Sciences.Production and hosting by Elsevier B.V.All rights reserved.

Preliminary Study on the Ecological Agriculture Development Model of"Pennisetum sineseRoxb-Rocky Desertification Control-Edible Mushrooms"in Guizhou Province

In Guizhou Province, the area of rocky desertification land is 3.023 8 million hm^2, accounting for 17.16% of total area of land in the province. Rocky desertification is the most important ecological problem that restricts the economic and social development in Guizhou, so the primary task of ecological construction in Guizhou Province is to curb rocky desertification. How to effectively, efficiently and persistently use rocky desertification land is not only the key to the improvement of ecological environment, but also an urgent problem solved for local people's survival and anti-poverty. Due to having developed roots, growing fast, high yield of grass, strong resistance to drought, and high regeneration capacity, Pennisetum sinese Roxb has become a new method to control rocky desertification. How to use P. sinese Roxb efficiently becomes the key to the ecological control of rocky desertification by P. sinese Roxb. In this study, the ecological agriculture development model of "P. sinese Roxb-rocky desertification control-edible mushrooms" was studied, and the effect of cultivating Pleurotus eryngii with P. sinese Roxb in rocky desertification land was analyzed. Moreover, an outlook for the application of P. sinese Roxb in rocky desertification areas of Guizhou was given.

Assessment of the Diversity, Distribution and Uses of Wild Edible Mushrooms in Ekiti State, Nigeria

Lack of information about the available species of mushroom, the distribution along different ecological zones and purposes for which they have been used has hampered their domestication for sustainable production. This study assessed the diversity, distribution and uses of wild edible mushrooms in Ekiti State. The study area was stratified based on vegetation distribution into two zones （rainforest and derived savanna zones）. Pre-tested semi-structured questionnaires were administered to 80 randomly selected respondents for data collection. Descriptive statistical technique of frequency counts and percentages were used to summarize the data. Information from the study revealed that 52.5% and 67.5% of the respondents are above 50 years in the rain forest and the derived savannah vegetation, respectively. About 57.5% and 47.5% of the respondents had at least secondary education in the rainforest and derived savannah vegetation, respectively, while majority of the respondents with over 20 years of collection experience carried out their hunting in free areas outside forest reserve in both ecological zones. Twenty different species of mushroom are collected at different period of the year for consumption. The study recommended that government should checkmate further destruction of the remaining natural forest to ensure continued availability of these mushrooms.

Proximate composition and antimicrobial activity of three wild edible mushrooms consumed by ethnic inhabitants of Tripura in northeast India

The study was focused on edible mushrooms consumed by the ethnic inhabitants of Tripura,northeast India.Three mushrooms namely Lentinus squarrosulus,Lentinus tuber-regium and Macrocybe gigantea were evaluated quantitatively for proximate composition and mineral nutrients.In addition,the efficacy of the mycelial extract was tested for antimicrobial activity against the bacteria.The results of this study indicated that mushrooms were rich in protein and carbohydrate with low fat content.Macrocybe gigantea proved to the best source of protein and carbohydrate among the three mushrooms.There were varied amount of micronutrients recorded in all the three mushrooms.The antimicrobial activity of mycelial extract of M.gigantea was found against all the tested strains of bacteria.The study suggested that these mushrooms are rich in nutrients particularly M.gigantea which could be used as an alternative source of vegetarian food to the ethnic people of Tripura.The antimicrobial activity exhibited by these mushrooms indicated their medicinal properties.

Comparative analysis of four edible mushrooms based on HPLC fingerprint and pattein recognition analysis

A high performance liquid chromatography-ultraviolet(HPLC-UV)fingerprint method for the overall chemical analysis of edible mushrooms was established based on Auricularia heimuer for the first time,and then applied to analyze 60 batches of A.heimuer,Auricularia cornea.Auricularia cornea*Yu Muer’and TremeUa fuciformis.A total of 9 characteristic peaks of A.heimuer.11 characteristic peaks of A.cornea,6 characteristic peaks of A.cornea‘Yu Muer’,and 9 characteristic peaks of I fuciformis were designated.Then,a combinatory analysis,including similarity evaluation,hierarchical cluster analysis and principal component analysis,revealed the chemical consistency and difference between samples from the same and different species.The HPLC fingerprint method established in this paper could be used to characterize the components of A.heimuer,A.cornea,A.cornea‘Yu Muer’,and T.fuciformis and discriminate the 4 edible mushrooms effectively in combination with pattern recognition analysis.

Overview on the edible mushrooms in Egypt

Edible Mushrooms have been valued as a valuable food source due to its nutritional and medicinal characteristics.Edible mushrooms contain various bioactive components such as proteins,polyunsaturated fatty acids,polysaccharides,dietary fibers,amino acids,vitamins,and minerals.They have essential health effects,such as antioxidant,antimicrobial,immune-stimulatory,and anticancer,cholesterol-lowering properties.Because of their nutritional and medicinal benefits,mushrooms have become increasingly popular in recent years all over the world.Mushrooms were considered immortality plants in Ancient Egypt and were given to mankind by the god Osiris.Mushrooms were declared a delicacy reserved only for Egyptian nobility due to their distinct flavor.The current study focuses on the common species of edible mushrooms in Egypt and their different bioactive ingredients,nutritional values and the health benefits.

A review on nutritional advantages of edible mushrooms and its industrialization development situation in protein meat analogues

Animal meat is one of the major,high-quality protein sources in human food.The rapid economic development is accompanied by increasing demand for meat,which puts pressure on the global meat supply but also gives room for the development of the meat substitute market.Edible mushrooms are high in protein,rich in nutrients,and do not require large amounts of land for cultivation,making them an ideal raw material for the production of meat analogues.This paper introduces the nutritional properties of edible mushrooms from 4 perspectives:nutrients,active ingredients,allergens and flavor-presenting substances,and summarizes their unique nutritional advantages by comparing them with animal meat and plant-based meat analogue,and finally analyzes the industrialization development situation of edible mushroom protein meat analogues in China and abroad.In conclusion,edible mushrooms are very suitable for making meat analogues and are expected to become another major raw material after beans,cereals and other plant-based meat raw materials.The edible mushroom industry will have a promising future.

The 5^(th) International Workshop of Edible Mycorrhizal Mushrooms

Organized by People’s Government of Chuxiong Yi Nationality Autonomous prefecture of Yunnan Province,China Chamber of Commerce of Import and Export of Foodstuffs Native Produce and Animal By-Products,Mycological Society of China,Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China,the Fifth International Workshop on Edible Ectomycorrhizal Mushrooms (IWEMM5) will be held in Chuxiong, Yunnan, China from 26 to 29th August 2007. All aspects of the science of edible ectomycorrhizal mushrooms will be covered in the workshop. Considerable time will also be devoted to the trade and cultivation of EEMM which we anticipate will be of benefit to the economic development of the region.

Sexual spores in edible mushroom: bioactive components, discharge mechanisms and effects on fruiting bodies quality

Edible mushroom sexual spores have been gaining more interest due to their bioactive components and functions.Spore discharge(SD)is an important factor affecting the quality of edible mushrooms.In this review,the bioactive nutrients of sexual spores of edible mushrooms were summarized,the SD mechanism was described,and the relationship between postharvest SD and the quality of edible mushrooms was analyzed.Spores contain various bioactive nutrients that are benefi cial to the human body.Mature mushrooms can actively discharge spores in a process affected by light,relative humidity,and temperature.During storage,the physiological metabolism of spore-bearing gill tissue is vigorous,promoting the release of postharvest spores and changing the nutritional value of fruiting bodies.The flavor of the fruiting bodies also varied signifi cantly during SD.Edible mushroom sexual spores have the potential to become new raw materials for functional food and medical resources.Research on the effect of the mechanism of SD on the quality of edible mushrooms and the development of SD regulation technology may be a new trend in the quality control of edible mushrooms,which will promote the development of the edible mushroom industry.

Study on Cotton Nursery Substrate Using Cotton Seed Hulls Residue after Producing Edible Mushroom

In order to discuss the localization application technology of cotton seedling using substrate, the author used cotton seed hulls after the production of edible fungi residue, river sand and peat in different proportion formula using in field and laboratory cotton seedling test. The results showed that： dry mass per plant and leaf area per plant of formula 3 were higher than Jiangxi cotton seedling nurs- ery substrate.the higher proportion were 48.4% and 73.5%; the rate of forming plantlets, survival rate of transplant and the unginned cotton yield had no obvious difference with the other matrix seedling and transplanting; nursery substrate was returned using as fertilizer, reduced environment pollution, achieved comprehensive utilization and cyclic utilization. Cotton seed hulls after the production of edible fungi residue was a cotton seedling substrate material of saving work,reducing cost and protecting environment and would have a good application prospect.

The coral mushrooms Ramaria and Clavaria

The need to improve the quality life together with the increase in the frequency of threating diseases direct the attention of many scientists to look for potential foods as a source of nutritional and therapeutical agents.Since ancient times,several mushrooms have been reported as a nutritious food with valuable medicinal properties.The genus Ramaria and Clavaria belonging to coral fungi are a group of edible mushrooms that are distributed all over the world.The studies on different species of Ramaria and Clavaria have revealed their medicinal potentials.This review aims to present the importance of genera Ramaria and Clavaria as both food and medicine,and they offer new insights to researchers to develop new drugs and nutraceuticals.

Diversity of Wild Mushrooms in Nagaland, India

The Indian sub-continent is blessed with favorable agro climatic conditions that are suitable to a varied range of fungal species. Though the occurrence of mushrooms is of diverse nature, they are not well studied and documented. Northeastern region of India is one of the biodiversity hotspots. Nagaland is one of the Northeastern states of India. The people of the state highly covet mushrooms and have been a delicacy since time immemorial. The present study documents the macro fungal diversity in various districts of the state. A total of 87 species of wild mushrooms were collected and identified. They are parasitic, saprophytic and ecto-mycorrhizal in habitat. The highest numbers of mushroom species were collected during May–September from the study areas. Of the collected mushrooms, 37 species were identified as edible, 21 species medicinal, 5 poisonous and 37 inedible/unclassified.

Traditional knowledge and use of wild mushrooms in Simbhanjyang,Makwanpur district,Central Nepal

Mushrooms are an important source of food among different ethnic communities in Nepal and are widely collected during rainy season.This paper includes documentation of wild mushrooms in the vicinities of Simbhanjyang,Makwanpur district,central Nepal.Semi-structured open ended questionnaire and Rapid Rural Appraisal were followed to get information about edibility of wild mushrooms from local harvesters.Forty-three species of mushrooms were documented.The collected species are saprophytic,parasitic,and mycorrhizal.Ethnic communities identify edible and other useful mushroom species based on traditional knowledge transferred from their ancestors orally which was in practice and tested through generations.Edible Boletus edulis,Russula virescens and medicinal Ganoderma tsugae are some potential non-timber forest products from the study area.

Global perspectives on the ecological,cultural and socioeconomic relevance of wild edible fungi

Wild edible fungi(WEF),including mushrooms and truffles,comprise a natural source of nutritious and healthy food.The consumption of WEF began at least 18,700 years ago during the Stone Age.Current data from over 100 countries indicates the existence of more than 2,100 edible species,a figure that is continually growing,as vast regions and many cultures remain understudied.However,only around 30 species of WEF are grown commercially at a large-scale.WEF also play a key ecological role in the structure and functioning of natural ecosystems and have significantly contributed in shaping all life on the planet.Either as food,medicine or both,they are important for the survival,cultures,and economies of hundreds of ethnic groups around the globe.Over the last 15 years,there has been a noteworthy increase in the international trade of WEF,which is currently estimated at billions(USD)annually.In 2017,the WEF global trade,of either fresh or processed products,exceeded 1,230,000 tonnes.Due to their ecological,sociocultural and economic importance,the international WEF trade has a role to play in the post-pandemic recovery period.The main challenge of this period will be maintaining natural ecosystems while simultaneously improving human wellbeing.Critical elements of this challenge include ensuring food security,enhancing rural development,creating sustainable jobs,mitigating hunger,and slowing the loss of traditional knowledge generated over millennia.This review analyzes the ways in which sustainable use of WEF could contribute to achieving these goals.

Aroma profile of two commercial truffle species from Yunnan and Sichuan,China:inter-and intraspecific variability and shared key compounds

Aroma is central to the worldwide success of truffles as gourmet food and the high prices paid for these edible mushrooms.In this study,volatile organic compounds(VOCs)from fruiting bodies of two Chinese truffles of commercial relevance,Tuber indicum and Tuber pseudohimalayense,were analyzed using headspace solid-phase microextraction(HS-SPME)coupled with gas chromatography-mass spectrometry(GC-MS).We aimed to characterize the aroma profile and determine whether it would be influenced by provenance and stage of maturation.We thus collected and analyzed young,middle mature and mature fruiting bodies of each species from different locations in Yunnan and Sichuan provinces,located in southwestern China.Overall,76 VOCs were identified,belonging to different chemical classes,i.e.alcohols and phenols,aldehydes and ketones,benzenes and methoxy compounds,hydrocarbons and amines.A large number of volatiles identified in T.indicum and T.pseudohimalayense are reported here for the first time for these truffles.While more than 50%of identified VOCs were produced by both truffle species,considerable differences were present in the aroma profiles of fruiting bodies collected at various maturation stages,revealing a dynamic pattern in the biosynthesis of VOCs.Furthermore,truffles of different provenance had distinct proportions of volatile constituents,suggesting that,besides genetic factors,edaphic and microclimatic conditions influence the synthesis of VOCs in a complex manner.

Characterization and Biological Activities of Protein-Bound Polysaccharides Produced by Cultures of Pleurotus ostreatus

Several species of mushrooms, as Pleurotus ostreatus, have been valued as edible and medicinal resources. These mushrooms may be an important source of polysaccharides with medicinal properties as antioxidant, antitumoral, antimicrobial and immunological properties. The aim of this work was to produce and to evaluate the biological properties of protein-bound polysaccharide complexes, extra intracellular （E-PPS and I-PPS）, extracted from P. ostreatus cultures, using agricultural sunflower wastes as carbon source. Three main compounds in the E-PPS and four main compounds in the I-PPS were identified by SEC-UV-RI-HPLC. These complexes of P. ostreatus present no toxicity in Artemia salina cultures, after 24 h of incubation. Antioxidant properties of the complexes were evaluated by radical scavenging activity using DPPH method and lipid peroxidation inhibition capacity, determined by erytbsocytes hemolysis. Additionally, E-PPS and I-PPS extracts revealed capacity to mimetize superoxide dismutase and catalase enzymatic activities. The hepatoprotector effect of E-PPS extracts in Wistar rats was evaluated by AST, ALT, ALP and y-GT activities, showing capacity to reduce the liver damage induced by ethanol-administration. This hepatoprotective effect is equivalent to that observed by silymarin, a standard drug. Our results suggests that the extracts of E-PPS and I-PPS produced by P. ostreatus cultures, using agricultural sunflower wastes as main carbon source, can be used as an important source of bioactive compounds with potential medicinal value.

Diversity of Gasteromycetes in Rajasthan,India-I

In this paper,taxonomic descriptions of eight members of Gasteromycetes belonging to Montagnea,Phellorinia,Podaxis and Tulostoma are given.Among four Podaxis species described,Podaxis africana,P.beringamensis and P.saharianus are new records for India.Phellorinia herculeana subsp.herculeana and P.herculeana subsp.strobilina are also described herein while P.herculeana subsp.strobilina is a new record for India.Taxonomic descriptions of Montagnea haussknechtii and Tulostoma brumale reveal new insights into the rare species of Gasteromycetes confined to arid and semi-arid areas worldwide while M.haussknechtii is a new record for India.

Identification of Common Edible and Medicinal Mushrooms by DNA Barcoding

Objective:To identify common edible and medicinal mushrooms using the internal transcribed spacer(ITS) region.Method:A total of eighty-five samples belonging to forty-three species were used in this study.ITS regions were amplified and sequenced.All ITS regions were analyzed using BLAST and MEGA 5.10 methods.Results:Forty species were identified correctly via BLAST method whereas forty-one species were distinguished via Neighbor joining(NJ)tree.All the species could be distinguished by BLAST combined with NJ tree and ITS sequence characteristics.Conclusion:Forty-three common species of edible and medicinal mushrooms were effectively identified using DNA barcoding technology based on ITS region.

Medicinal value of edible mushroom polysaccharides:a review

Edible mushroom polysaccharides,as one of the main biological activities of mushrooms,have anti-tumour,anti-inflammatory,antioxidant,immune regulation and other functions.Especially because of its anti-tumour and immunomodulatory activity,it has been used in the clinical treatment of various diseases.Recent studies have focused on mushroom polysaccharides'functional properties,which may be related to their chemical structures.This review aims to clarify the biological activity of edible mushroom polysaccharides and their medicinal potential in human health and to reveal the relationship between chemical structure and the biological activity of edible mushroom polysaccharides.