Thursday, January 30, 2020

Application of Lactic Acid Bacteria Essay Example for Free

Application of Lactic Acid Bacteria Essay In food industry Recent years the interest increased in using LAB by using bacteriocin-like inhibitory substances (BLIS) because of their potential use as a natural antimicrobial agent to enhance the food safety of food products and increase the nutritional values of the food. Foods that fermented by LAB such as cheese, kimchi, fermented sausages, wine, yogurt and pickles have not only a greatly extended shelf life compared to the raw materials from which they are derived, but also enhance the aroma and flavor directly or indirectly by the fermenting organisms. There have many lactic acid fermentation products that have been used since long time ago such as Kimchi (korea), Yogurt (eastern Europe), Dahi (india n Nepal) and cheese (Europe n middle east). Cheese The basic steps of cheese production are acidification, coagulation, dehydration, and salting. While acid production is the major function of the starter bacteria. LAB is responsible for the fresh acidic flavor of unripened cheese and is important in coagulation of milk casein, which is accomplished by the combined action of the enzyme rennet. During the ripening process the LAB also producing volatile flavor compounds such as diacetyl and aldehydes by releasing proteolytic and lipolytic enzymes involved in cheese ripening and by natural antibiotic substances that suppress growth of pathogens and other spoilage microorganisms. For Cheddar and Colby cheese production, starter cultures include strains of Lactococcus lactis ssp.cremoris and Lactocoocus lactis ssp lactis. While, blue cheese require both and the mold Penicillum roqueforti is also added as a secondary for the flavor and blue color. Health benefits of LAB LAB also known as probiotics because they can promote intestinal balance and strengthen the immune system. Managing Lactose Intolerance -LAB convert lactose into lactic acid, their ingestion may help lactose intolerant individuals tolerate more lactose than what they would have Effective diarrhea relief preventing and shortening the duration of several types of diarrhea LAB compete with pathogens for nutrients and space in the intestines By-products of metabolism may have a direct effect against the pathogens. For example, in vitro work shows that L. casei, L. acidophilus and L. bulgaricus can all produce antimicrobial agents such as acidophilin and bulgarican that can inhibit growth of pathogens Enhance immune system -LAB has been shown to increase B-lymphocytes or B cells, which recognize foreign matter -LAB also increase phagocytic activity which help to destroy foreign matter by the increasing the proportion of T lymphocytes and Natural Killer cells LAB can stimulate the immune activity in the intestinal mucosa and treat -Reducing inflammations and food allergies Potential Benefits Prevention of Colon Cancer: -LAB has ability to bind with carcinogenic substances (anti- carcinogenic effects) that can protect against colon cancer -Lower rates of colon cancer among higher consumers of fermented dairy products have been observed in some population studies However, more long-term studies on human is needed Lowering cholesterol -Lower serum cholesterol levels in animals by breaking down bile in the gut, thus prevent its reabsorption. However, various studies with fermented milk products have shown either no effect or a reduction in cholesterol levels.

Wednesday, January 22, 2020

Comparative Elegies~Similar or Different? :: essays research papers

An elegy is a poem of lament, usually formal and sustained, over the death of a particular person; also, a meditative poem in plaintive or sorrowful mood. Through an elegy authors are able to convey their deepest remorse and grief through the eloquent use of the English language. Three elegies in which show the possible interpretations and moral convictions of death are â€Å"Elegy for Jane†, â€Å"Elegy Written in a Country Churchyard†, and â€Å"A Satirical Elegy†. Jane's unfortunate death in an equestrian accident prompted one of her professors, the poet Theodore Roethke, to write a moving poem, "Elegy for Jane," recalling his young student and his feelings of grief at her loss. It is very interesting that Jane's death is not the subject of the poem; rather, her death presents an occasion for calling up a certain emotional state in which Roethke's feelings of grief and pity transcend the occasion. This spiritual epitaph is laced with imagery; painting an extremely vivid picture given the details about her image. Roethke associates the deceased with elemental aspects of nature--the plant tendrils, the pickerel smile, trembling twigs, whispers turning into kissing etc. His lines create an amazingly tranquil atmosphere. Her voice is described as if it were perfectly toned; touching everyone that crosses her path of wind. Roethke compares Jane to a wren, a sparrow, a pigeon—all birds which draw forth an emotion. Birds naturally symbolize peace, freedom, and love. The wren represents joyful times, the high moments in Jane’s life; the sparrow however usually represents those who feel they are not worth anything; and pigeons I personally think are trite birds. â€Å"Elegy for Jane† is not the only elegy which incorporates nature into its meaningful lines. â€Å"An Elegy Written in a Country Churchyard† by Thomas Gray is a similar elegy to â€Å"Elegy for Jane† in that it incorporates mother nature and the animal which is most unique to her—the bird: â€Å"The breezy call of incense-breathing morn, The swallow twittering from the straw-built shed, The cock's shrill clarion, or the echoing horn, No more shall rouse them from their lowly bed.† Not only are these elegies similar because of their richness of the language and comparative nature with the outside world but also in that it mourns the death not of great or famous people, but of common men. The speaker of this poem sees a country churchyard at sunset, which impels him to meditate on the essence of human mortality.

Tuesday, January 14, 2020

First Week Reflection

Amazing and Pretty Traveling is always interesting. As we move from one place to another for recreation, to visit different places, to see the beauty, to watch out the modern world. We usually take a great experience having a Joyful travel in new places which we had never seen before. We anticipate so much wow to the place where we are going somewhere to visit. I was so much dreaming about the United States to go.And when I got a chance to go for ICE in United States, I started wondering how beautiful would be the place and university nature. Generally, I had a experienced on my past to leave home and arrive at the university. I found the difference in my expectations and the observations as soon as I attend this university. I got to know that there are also some smaller and beautiful cities in this country. After residing in this city, I made and cooperate with many friends from different nations with different races, religion, ethnics and so on.But I found no difference in them. I Just gained an excessive and desirable experience to talk with them. Not only this, I felt that I'm getting the most advanced education in an affordable cost than any other institutions in whole United States. I am feeling so much excitement to meet new friends, new lecturers and others. The another thing is that I m having a new food that differ from my previous food. I feel uneasy with them and I think that it will be as used to slowly.It was quite interesting to taste a new one before but not as a whole. However, I'm experiencing a DOD time at ECHO. I am enjoying most of the things beside some difficulties. Whenever I have problems, I suddenly ask my lecturers n if possible meet to my advisor. But every difficulties is the way of life and showing the right path to earn a meaningful livelihood as I think. Hoping all as the essentials of my life that I encountered, it seems normal Upton now, so amazing so pretty at ECHO.

Monday, January 6, 2020

Does Social Class Fill The Void - 1364 Words

Does Social Class Fill the Void? It is said that right before someone dies, they see their life flash before their eyes. They are said to see the things most dear to them. However, no one on their deathbed regrets the amount of money they have. In the moment of clarity, most realize that a number on a paycheck is not as important as emotional and mental possessions. People always tell each other that money can not buy happiness, yet most end up spending every waking moment thinking about money. Why do people waste their time and energy pursuing something that is not what they truly need? Often, people use social class to escape a void in their lives that can not be filled with materialistic possessions. Many people realize this rarely†¦show more content†¦For instance, this quote shows that Pip has not been aware that he is of a lower class. Being in the Satis house opens the door to the possibility of achieving a higher social status. Pip has a void in his life, and it is based on the shame he feels about his social standing. This realization is what will start Pip on his social-climbing journey. As time passes, Pip acts on these feelings of incompetence, which are his â€Å"particular reasons for wanting to be a gentleman† (130). To clarify, this evidence proves that Pip is attempting to escape his void of shame with the power of a higher social class. He is trying to stop being ashamed of his origins by leaving them behind. Pip is using higher social status as a means to get away from his problems. For Pip, becoming a gentleman is his escape from the shame he feels. In contrast, at the end of the novel, Pip realizes that working â€Å"pretty hard for a sufficient living† is what truly makes a man â€Å"do well† (496). To further the point, this citation illustrates that Pip realizes that striving for social class is actually making him more unhappy. His constant reaching does not make his shame go away, it only makes it worse. Pip then realizes that an honest, hardworking lifestyle is the only way to make the shame