Kluyveromyces marxianus as a Probiotic Yeast: A Mini-review

2020 ◽  
Vol 16 (8) ◽  
pp. 1163-1169
Author(s):  
Aziz Homayouni-Rad ◽  
Aslan Azizi ◽  
Parvin Oroojzadeh ◽  
Hadi Pourjafar

Background: Yeasts play diverse roles in human life. Since ancient times, these micro organisms have been used to produce food products and beverages including bread and beer. Nowadays, the biotechnological products of yeast are some of the main components of commercial products. Objective: Some species of yeast such as Saccharomyces cerevisiae and Saccharomyces boulardii are recognized as probiotic yeast with extensive applications in the food and drug industries. However, certain species like Kluyveromyces marxianus are still not recognized as probiotic micro organisms despite their widespread industrial usage. In this study, the application of K. marxianus in preparing food and the medicinal product was reviewed in terms of its beneficial or harmful effects. Methods: Pub Med, Google Scholar, Scopus, and Science Direct databases were searched by using “Probiotics”, “Yeast”, and “Kluyveromyces marxianus”. Results: The findings suggest that K. marxianus can be recognized as a probiotic yeast species. Conclusion: It can be concluded that K. marxianus may be considered as a probiotic micro organism with a variety of commercial and medical applications.

2021 ◽  
Author(s):  
Zhiyong Mu ◽  
Yijin Yang ◽  
YongJun Xia ◽  
Fukang Wang ◽  
Yiwei Sun ◽  
...  

Probiotic Saccharomyces boulardii has been widely used in colitis treatment, however, beneficial effects of other yeast species are rarely studied. Saccharomyces cerevisiae with great stress tolerance and potential in colitis...


2021 ◽  
Vol 10 (4) ◽  
pp. 196
Author(s):  
Julio Manuel de Luis-Ruiz ◽  
Benito Ramiro Salas-Menocal ◽  
Gema Fernández-Maroto ◽  
Rubén Pérez-Álvarez ◽  
Raúl Pereda-García

The quality of human life is linked to the exploitation of mining resources. The Exploitability Index (EI) assesses the actual possibilities to enable a mine according to several factors. The environment is one of the most constraining ones, but its analysis is made in a shallow way. This research is focused on its determination, according to a new preliminary methodology that sets the main components of the environmental impact related to the development of an exploitation of industrial minerals and its weighting according to the Analytic Hierarchy Process (AHP). It is applied to the case of the ophitic outcrops in Cantabria (Spain). Twelve components are proposed and weighted with the AHP and an algorithm that allows for assigning a normalized value for the environmental factor to each deposit. Geographic Information Systems (GISs) are applied, allowing us to map a large number of components of the environmental factors. This provides a much more accurate estimation of the environmental factor, with respect to reality, and improves the traditional methodology in a substantial way. It can be established as a methodology for mining spaces planning, but it is suitable for other contexts, and it raises developing the environmental analysis before selecting the outcrop to be exploited.


Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 752
Author(s):  
Andreas N. Angelakis ◽  
Heikki S. Vuorinen ◽  
Christos Nikolaidis ◽  
Petri S. Juuti ◽  
Tapio S. Katko ◽  
...  

Since ancient times, the need for healthy water has resulted in the development of various kinds of water supply systems. From early history, civilizations have developed water purification devices and treatment methods. The necessity for fresh water has influenced individual lives as well as communities and societies. During the last two hundred years, intensive and effective efforts have been made internationally for sufficient water quantity and quality. At the same time, human life expectancy has increased all over the globe at unprecedented rates. The present work represents an effort to sketch out how water purity and life expectancy have entangled, thus influencing one another. Water properties and characteristics have directly affected life quality and longevity. The dramatic increase in life expectancy has been, indisputably, affected by the improvement in water quality, but also in other concomitant factors, varying temporally and spatially in different parts of the world throughout the centuries. Water technologies and engineering have an unequivocal role on life expectancy. In some cases, they appear to have taken place earlier than the progress of modern medicine. Among these, improved sanitation, personal hygiene, progress in medicine, and better standards of economic living have played the greatest roles.


Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 674
Author(s):  
Jimmy G. Hernández-Gómez ◽  
Argelia López-Bonilla ◽  
Gabriela Trejo-Tapia ◽  
Sandra V. Ávila-Reyes ◽  
Antonio R. Jiménez-Aparicio ◽  
...  

Bile salt hydrolase (BSH) activity in probiotic strains is usually correlated with the ability to lower serum cholesterol levels in hypercholesterolemic patients. The objective of this study was the evaluation of BSH in five probiotic strains of lactic acid bacteria (LAB) and a probiotic yeast. The activity was assessed using a qualitative direct plate test and a quantitative high-performance thin- layer chromatography assay. The six strains differed in their BSH substrate preference and activity. Lactobacillus plantarum DGIA1, a potentially probiotic strain isolated from a double cream cheese from Chiapas, Mexico, showed excellent deconjugation activities in the four tested bile acids (69, 100, 81, and 92% for sodium glycocholate, glycodeoxycholate, taurocholate, and taurodeoxycholate, respectively). In the case of the commercial probiotic yeast Saccharomyces boulardii, the deconjugation activities were good against sodium glycodeoxycholate, taurocholate, and taurodeoxycholate (100, 57, and 63%, respectively). These last two results are part of the novelty of the work. A weak deconjugative activity (5%) was observed in the case of sodium glycocholate. This is the first time that the BSH activity has been detected in this yeast.


Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1428
Author(s):  
Ramachandran Chelliah ◽  
Eun-Ji Kim ◽  
Eric Banan-Mwine Daliri ◽  
Usha Antony ◽  
Deog-Hwan Oh

In the present study, we screened for potential probiotic yeast that could survive under extreme frozen conditions. The antimicrobial and heat-stable properties of the isolated yeast strains Saccharomyces boulardii (S. boulardii) (KT000032, KT000033, KT000034, KT000035, KT000036, and KT000037) was analyzed and compared with commercial probiotic strains. The results revealed that the tested S. boulardii KT000032 strain showed higher resistance to gastric enzymes (bile salts, pepsin, and pancreatic enzyme) at low pH, with broad antibiotic resistance. In addition, the strain also showed efficient auto-aggregation and co-aggregation abilities and efficient hydrophobicity in the in-vitro and in-vivo C. elegens gut model. Further, the KT000032 strain showed higher antimicrobial efficiency against 13 different enteropathogens and exhibited commensal relationships with five commercial probiotic strains. Besides, the bioactive compounds produced in the cell-free supernatant of probiotic yeast showed thermo-tolerance (95 °C for two hours). Furthermore, the thermo-stable property of the strains will facilitate their incorporation into ready-to-eat food products under extreme food processing conditions.


Author(s):  
Rohit Rastogi ◽  
Mamta Saxena ◽  
Mayank Gupta ◽  
Akshit Rajan Rastogi ◽  
Pradeep Kumar ◽  
...  

From ancient times, humans are striving for being healthy and to live with mental peace with family and society. In the previous centuries also, some manmade and mostly natural disasters have disturbed the pace of human life. There have been times when the whole human race has been in terror, danger, and utmost worry. The electrical gadgets also have made the human life comfortable, but also machines have dominated its consciousness. The stress, aggression, depression, and many more issues are also showing presence in all our lives. The chapter is a trial to establish the effect of yagna and mantra science over human calmness and its effect on human health irrespective to gender and age. The article also elaborates the effect of Sanskrit sound and mantra chanting on emission of radiations from electronic gadgets. It also presents the effect of spiritual practices on the human body and soul after the terror, stress, grief created due to COVID-19.


2020 ◽  
pp. 22-28
Author(s):  
Tatyana Lyzo ◽  
Pavel Krylov

Articular cartilage is constantly exposed to high loads. Wearing out of joints due to aging, as well as their poor functioning, is a common problem leading to a significant decline in the quality of human life. Lubricin is one of the main components of the biological lubrication system, it is a surface-active mucinous glycoprotein, which plays an important role in cartilage integrity. Its main function is to protect the cartilage surfaces from excessive friction – a necessary condition for maintaining the health of mammal joints. Moreover, lubricin has growth-regulating properties, it participates in the maturation of the subchondral bone and prevents cell adhesion. Although the molecule of lubricin was discovered almost half a century ago, there is still not much data available. The molecule has a great potential in medical applications. Studying lubricin can help solve problems caused by joint diseases, such as osteoarthritis. This review presents up-to-date information about structural and functional features of lubricin, its role in maintaining the integrity of articular cartilage, which can serve as a basis for the development of chondroprotectors or as a material to improve existing joint prostheses.


Author(s):  
Yusuf Ziya Tengiz ◽  
Zehra Meliha Tengiz

Beekeeping is one of the most common agricultural activities in the world. In addition to the world and human life, it is very important in the pollination and the efficiency of the plants. Beekeeping activities have been done since ancient times as the tradition of Anatolian people. In Turkey grows 75% of the honey plants species determined in the world. This provides a variety of honey in different aroma and flavors. Turkey with 7 796 666 beehives is in 3rd rank, with 114 471 tons of honey production is in 2nd rank and with 4 488 tons of beeswax production in 2017 is in 4th rank in the world bee products have an important role. It is important to determine future trends in developing appropriate policies for our country, which is one of the leading countries in beekeeping activities. The main aims of this study are to forecast honey and beeswax product in Turkey for 2019-2025. Arima model, which is one of the time series analysis, was used in this study. According to the results, it is expected that honey production will increase in these years. However, it is expected the increase in the production of beeswax until 2021. After 2021 year is expected to decrease a little. In our country which has great potential for beekeeping, it will be able to take place among the countries which have a significant influence in foreign trade with the effective use of production resources in the realization of activities.


2021 ◽  
pp. 257-268
Author(s):  
Irena Smetonienė

The bread in one form or another has been known to people all over the world. Linguistic data and rites show that the Lithuanians have been eating bread since ancient times. Bread is mentioned in the small-form verbal folklore, songs, sagas, fairy tales, beliefs and various rites. In ancient times the bread was personalised and deified. The examples from the dialect dictionaries were also included into the research because every dialectal saying is an example of cultural message, manifestation of tradition nurturance and preservation, a part of cultural heritage, which links the past with the present. The dialectal examples show, what is deep-rooted in the tradition, what is passed down from generation to generation, what lies in the traditional value system and what makes the essence of an ethnic group. Due to these reasons the dialectal texts have a huge public or cultural value as they denote a content that is significant to a certain community. Having completed the analysis of dialectal discourse, it can be stated that various dictionaries construct the following picture of the concept bread: bread is the main meal of people, it is baked from different kinds of cereal flours, it is respected and saved, it has healing powers; the bread baked at home is the most delicious; if there is no bread, a person starves; to have bread all the time one has to work hard because baking bread is labour-intensive work, which has to be performed with knowledge and love, to make bread delicious and fragrant, calamus, cabbage or maple leaves are put under a loaf of bread, it is decorated or marked with sacred signs; an individual equals bread with human activity and appearance; bread is a measure of life, a reference point for evaluating certain actions. The place of bread in the human life is reflected by derivates as well: special things, capacities for mixing, souring, baking, slicing or keeping bread; other meals prepared from bread.


Author(s):  
Claudia Capusoni ◽  
Immacolata Serra ◽  
Silvia Donzella ◽  
Concetta Compagno

Phytic acid is an anti-nutritional compound able to chelate proteins and ions. For this reason, the food industry is looking for a convenient method which allows its degradation. Phytases are a class of enzymes that catalyze the degradation of phytic acid and are used as additives in feed-related industrial processes. Due to their industrial importance, our goal was to identify new activities that exhibit best performances in terms of tolerance to high temperature and acidic pH. As a result of an initial screening on 21 yeast species, we focused our attention on phytases found in Cyberlindnera jadinii, Kluyveromyces marxianus, and Torulaspora delbrueckeii. In particular, C. jadinii showed the highest secreted and cell-bound activity, with optimum of temperature and pH at 50°C and 4.5, respectively. These characteristics suggest that this enzyme could be successfully used for feed as well as for food-related industrial applications.


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