This website uses cookies to ensure you have the best experience. Learn more

Blanching And Browning Of Apples Essay

1421 words - 6 pages

QuestionsFor the rapid peroxidase test on the potato. Was there a difference between the uncut, cut, and scratched flesh? Please explain the reasons for any differences observed.The results of the rapid peroxidise test were; the uncut potato took 10 seconds to brown, the cut potato took 5 seconds to brown, while the scratched and cut potato took 2 seconds to brown. Both cut potatoes went a convincing brown colour, but the uncut potato did not. The uncut potato had only little bits of brown compared to large patches on the other samples.The outer layers of the potato are tougher and act as a barrier to outside influences that could brown the potato. The further in to the potato you get, the more vulnerable it is to oxidative damage. The scratched potato exposed the most layers (larger surface area to volume ratio) and cut deeper in, so therefore it was more at risk of oxidative damage. It is therefore better to only cut potatoes when you are about to use them.QuestionsWhich treatments deactivated the polyphenol oxidase enzymes in the apple most effectively according to the rapid Peroxidase test? Which apple treatments had the least colour formation (browning) after standing 30-60mins?The most effective treatments for deactivating the polyphenol oxidase enzymes in the apple were: 0.2% L-ascorbic acid for 3 minutes (v); 0.3% Na metabisulphite for 3 minutes (vi); 1% Citric Acid for 3 minutes (vii); 0.3% MBS then 1% Citric acid for 3minutes (viii); and the steam tunnel for185 seconds, at 100 oC.(ix) The longer it takes for the rapid Peroxidase test to turn a treatment sample brown, the more effective the treatment is. Standing the apple treatments for an hour (60 minutes) after they are treated, and then observing brown colour formation is also a good test of how good a treatment is.Treatment (ix) was the most effective because the Rapid Peroxidase test took 10 minutes, and even then there only very, very slight colour. Blanching inactivates enzymes and kills bacteria. The steam tunnel treatment didn’t have any colour formation after standing for an hour.The next best treatment number was (viii). It took 2 minutes 10 seconds for the rapid Peroxidase test to turn this treatment sample brown. It also wasn’t affected by standing for an hour.Treatments (v), (vi), and (vii) were quite equally effective, and won the prize of the third best treatments. They all went brown in the Peroxidase test at around 1 ½ minutes. Treatment five went slightly brown after standing for an hour, so it failed that test, but the other 2 treatments had no colour formation.No treatment is perfect, and the fruit will eventually undergo enzymatic browning no matter which treatment you use. Fruit has to go bad eventually. These treatments can however, stall the enzymatic browning from occurring.QuestionsUsing literature briefly describe how each of the 9 treatments controlled the browning of the apple slices, relate this information to your observations for the...

Find Another Essay On Blanching and Browning of Apples

Images of Love Expressed in the Poetry of Browning and Tennyson

2549 words - 10 pages images of love as created, and thus defined, by Alfred lord Tennyson in “The Lady of Shalott” and Elizabeth Barrett Browning in “How do I Love Thee.” In Browning’s “How do I Love Thee”, her very existence seems to be defined by her love for the unnamed “thee”. The image of love as a joyous transcendental metaphysical experience is created as she attempts to give words to this feeling. She begins with a rhetorical question of “How do I love thee

Compare the way Goldhagen and Browning present the perpetrators of the Holocaust

2021 words - 8 pages in Jozefow, Poland on July 13th 1942 (Browning:2001:225). This example clearly highlights the way each historian presents the perpetrators in different ways through; the use of language, imagery, stylistic devices and quotations, as a way of backing up their own argument. To do this I will focus on how various aspects of the massacre are portrayed and the way in which this affects the presentation of the perpetrators. This will including looking

Individual in society: Poetry of Robert Browning and two selected texts

724 words - 3 pages social expectations are evidenced in Robert Browning’s Last Duchess and The Bishop Orders his Tomb at St. Praxed’s Church, English Laws for Women in the Nineteenth Century by Caroline Norton and Oscar Wilde’s A Picture of Dorian Gray.The role of women within the Victorian era constituted a submissive and oppressed one. The attitude of the patriarchal society of women is demonstrated and satirized in Browning’s My Last Duchess

Interpretation of Poems by Robert Browning, William Yates, and William Williams

700 words - 3 pages The Duke of Ferrara is a character and the speaker in the poem “My Last Duchess,” by Robert Browning. The reader witnesses a man that is controlling and whom will destroy anything that he cannot control. One realizes immediately, the extent of the Duke’s need for power in the title and in the first line when he uses the term “My” which shows ownership (Browning). The Duke cannot control the Duchess’s “spot of joy,” (Browning line 21) therefore

The Life and Work of Elizabeth Barrette Browning: A Woman Cannot Do the Things She Ought

2290 words - 9 pages “A woman cannot do the things she ought, which means whatever perfect thing she can, in life, in art, in science, but fears to let the perfect action take her part and rest there: she must prove what she can do before she does it.” –Quote from Elizabeth Barrette Browning Elizabeth’s life was not what one would consider easy. Elizabeth Barrette was only at the tender age of 10 when she was reading William Shakespeare; she

A Comparison of Porphyria’s Lover and My Last Duchess by Robert Browning

1973 words - 8 pages A Comparison of Porphyria’s Lover and My Last Duchess by Robert Browning The two poems ‘Porphyria’s lover’ and ‘my last duchess’ by Robert Browning shows a dramatic monologue. Dramatic monologue is a story that is told by one person; which means you only get one point of view; in the two poems they are based on the narrator’s crisis, his feelings and his way of thinking; and you have to believe it because that is the

A Comparison of 'My Last Duchess' by Robert Browning and 'Ulysses' by Alfred Lord Tennyson

1078 words - 4 pages A Comparison of 'My Last Duchess' by Robert Browning and 'Ulysses' by Alfred Lord Tennyson These two poems, or monologues, were written by Robert Browning (My last Duchess) and Alfred Lord Tennyson (Ulysses), in the 19th century during the reign of Queen Victoria. Many other influential writers were also born in this period. During this time, Britain’s population doubled from 17.5 million to 37 million. Britain was a very

Analysis of To His Coy Mistress by Andrew Marvell and Sonnet by Elizabeth B. Browning

5433 words - 22 pages Analysis of To His Coy Mistress by Andrew Marvell and Sonnet by Elizabeth B. Browning This assignment will examine two poems that were written before 1914. The two poems I will be focussing on are 'To His Coy Mistress' by Andrew Marvell and 'Sonnet' by Elizabeth B. Browning. In the essay I will be looking at how both poems emphasise love but yet have very different approaches as in the coy mistress the persona is trapping

"Porphyria's Lover" by Robert Browning - Questions and answers concerning the key aspects of the poem

1817 words - 7 pages a display of a sadistic man's actions.Question 9: What subtle comment is Browning satirising about the Victorian society?He is subtly suggesting that domestic violence and the gender paradigms of the Victorian era are disturbing issues in Victorian society that need to be challenged. He suggests that like the lover in the poem, Victorian society has a twisted perception about what is acceptable within both society and the domestic

A Comparison of the Attitudes Shown in The Man He Killed By Tomas Hardy and in My Last Duchess by Robert Browning

914 words - 4 pages A Comparison of the Attitudes Shown in The Man He Killed By Tomas Hardy and in My Last Duchess by Robert Browning The attitudes shown in the two poems “The Man he Killed” by Tomas Hardy and “My Last Duchess” Robert by Browning are very different; where as Hardy creates a modest, baffled character who feels very guilty, Browning’s Duke is a vain, proud man who has killed his wife in a premeditated manner. These

An essay comparing "The Poison Tree" by William Blake to "The Soliloquy of the Spanish Cloister" by Robert Browning: How the poets write about bitterness and hatred

1379 words - 6 pages Compare how the poets write about the emotions of bitterness and hatred. You should explore how they:* Use language, image and form* Create Distinctive characters for the speakersEach poem has a character known as "the speaker", the one who is supposedly writing the poem. Both of the poets for "The Soliloquy of the Spanish Cloister" and "The poison Tree" have their speakers expressing their hatred and bitterness in different forms. In the

Similar Essays

Tragic Life And Works Of Robert Browning

1281 words - 6 pages was influenced by many other poets and events that took place in the 18th century. To begin, my author is named Robert browning and he was born on May 7th, 1812 in Camberwell, England. Browning is a middle class suburb of London he was the first born of his parents and the only boy he had one sister named Sarianna Browning. His mom was a good Christian and a pianist while his father worked as a clerk at a bank. His father was an also an artist

Okara, Duffy And Browning Concept Of Freedom

1560 words - 6 pages modernization. Kara seems to have written “Once Upon A Time” to express his concern of western colonialism, particularly the British Empire who Nigeria was a colony of at Okara’s time eroding Ancient African tradition and Culture; in fact the poem was written as using his own observations of the British colonial rule of Nigeria, which he lived through. The idea of inhibition due to status is also presented in by Browning in ‘My Last Duchess’ the

Analysis Of Still Life With Apples And Oranges By Paul Cezanne

2224 words - 9 pages This assignment will provide an analysis of the Modernist artwork of Paul Cezanné's, Still-Life with Apples and Oranges (c.1899) within the art movement of Impressionism. The analysis will be based upon the aesthetic and ideological underpinnings of the avant-garde. This will be done with reference to the writings of Charles Harrison and Clement Greenberg. Firstly, Modernism and the avant-garde will be discussed as defined by Harrison and

The "Oranges And Apples" Narative From The Book "Friend Of My Youth" By Alice Munro. Why Did Victor Refuse Barbara?

1171 words - 5 pages cAlice Munro's narrative "Oranges and Apples" is based on the two main characters Victor Sawicky, the golden palomino and Barbara Zeigler, the looker. Barbara is a married woman who is having an affair with the best friend of her husband named Victor Sawicky. She is married to Murray Zeigler, the crown prince of Walley, who is also another main character in our story. However Victor refuses Barbara afterwards because she was his kind and he