An experiment on determining an amount of mms inside a bag by using the method of standard addition

Use, misuse, and electronic countermeasures.

The method allows bananas to remain in the ripened condition for an extended period of time while, at the same time, having improved sweetness and taste characteristics.

In this method, ripening is initiated by inserting additional gas into the banana package, such that the gas medium comprises from about 2.

The composition of the gas medium in the package is then adjusted such that the gas medium has a ratio of oxygen to carbon dioxide which meets the following conditions: Description This application is based upon and claims priority from U. They can be stored in such a way for a sufficiently long time.

Ethylene, combined with an increased temperature, contributes to the beginning of the banana ripening process. The standard procedure for activating the ripening process is as follows: Bananas in boxes are placed inside a gas treatment facility chamber, where they are held for days.

The composition of atmosphere inside the chamber is: Later, the bananas are removed from the gas treatment chamber, and allowed to ripen for days. Different innovations are known from the Prior Art that relate to methods for bananas storage and packing.

The system includes the external tare, internal container, and a flexible bag positioned inside the container, in which the bananas are placed. The container has holes for ventilation, while the flexible bag has means for opening and closing. Such a design provides for the required ventilation and temperature for banana storage.

The ability to open the bag allows ethylene to be delivered inside the bag, which activates the banana ripening process. The method utilizes a flexible internal container that is inserted into the external tare prior to placing banana clusters into it.

The banana clusters are placed in layers, with gaps between them created with filling gaskets. Such placement of bananas can provide for ventilation and an even temperature throughout the entire inner space of the container. Part of the packaging is made as a gas-permeable membrane, which has selective properties, ie, lower oxygen permeability as compared to carbon dioxide.

The membrane provides optimum conditions for storing bananas because oxygen is delivered into a package from the external environment, while carbon dioxide, which is released during the ripening process, is removed from the packaging.

Known methods for packaging bananas do not allow the process of ripening to begin without repacking and forced change of the atmosphere inside the package, since these processes require different gas compositions. The invention claimed herein is directed at simplifying the method for packaging bananas for the purpose of their ripening, and for providing a longer shelf-life during the ripening stage.

In this case, the indicated percentage of oxygen and carbon dioxide in the gas medium are selected from the following values: To activate banana ripening, the package is filled with a gas mixture consisting of nitrogen, oxygen, carbon dioxide, and ethylene, in the following proportions: After ripening has been activated, maintaining the indicated percentage of oxygen and carbon dioxide inside the package over the required period of time, is achieved by using a selective gas-permeable membrane that separates the volume of storage from the external atmosphere.

Selective exchange between the gas medium inside the packaging and atmospheric air through a gas-permeable membrane takes place, and thereby the gas medium with the indicated composition is maintained inside the package.

In the method claimed herein, green bananas are placed inside a package equipped with a means for providing a gas exchange between the gas mixture inside the package and the external atmosphere, thereby providing the above-indicated content of oxygen and carbon dioxide in a gas mixture inside the package.

The package is filled with a gas mixture which, along with oxygen and carbon dioxide, also contains a small amount of ethylene as defined above. It is known that ethylene activates the banana ripening process. However, there is no known process that injects ethylene, oxygen, and carbon dioxide in specific proportions directly into the package where bananas will be stored during ripening, until they are ripe and delivered to the consumer.

An experiment on determining an amount of mms inside a bag by using the method of standard addition

Later, during or immediately following ripening, the bananas are stored in a gas medium of a composition that meets the second set of conditions regarding content of oxygen and carbon dioxide. This composition is achieved via a gas-permeable membrane that separates the internal space of package from the external atmosphere.

Bananas are placed inside a package that allows for gas exchange between the gas mixture inside the package and the external atmosphere. The relationship between oxygen and carbon dioxide is maintained at the following conditions: In this case, the indicated percentage of oxygen and carbon dioxide in the gas medium is selected from the following values: These conditions determine the area, shown in FIG.

After the bananas are placed inside the package, it is filled with a gas mixture consisting of nitrogen, oxygen, carbon dioxide, and ethylene, in the following proportions: This atmosphere is maintained in the package from about 0.

The package typically contains from about 0. During the banana ripening process, modification of the initial gas medium ie, the ethylene-containing medium inside the package takes place. The ripening of bananas is accompanied by a decrease in the amount of oxygen and increase in the amount of carbon dioxide.

Means for providing the exchange between the gas mixture inside the package and the external atmosphere transitions the initial gas medium to one with an oxygen to carbon dioxide ratio required for quicker ripening and long-term storage, as defined above.

An experiment on determining an amount of mms inside a bag by using the method of standard addition

Selective gas-permeable membranes of perforated films can be used to provide a gas exchange between the gas mixture inside the package and the external atmosphere. The indicated membranes or films occupy part of the area of packaging, and are characterized by different permeability values for oxygen and carbon dioxide.

In this case, the maintained ratio of oxygen to carbon dioxide meets the above—indicated conditions.Jul 02,  · This is decided using a number of tests.

The tests will be expected to produce results which fall within a certain range. Examples are the sort of test you mention here, the Alveograpg tests Nico references, falling number tests to measure amylase activity, plus moisture and colour grade tests.

Scribd is the world's largest social reading and publishing site. Using a scale to measure the mass of the object, you can now calculate the density of the object as its mass divided by its volume. For example, if you add g of silver to mL of water, the final volume observed in the measuring cylinder is mL.

해외 봉사활동에 관심이많아 무엇을 할까 알아보던 중. 우연히 지인의 소개로 알게됬습니다. 지금 수강중인데 강의 내용도 좋고 저에게 있어 해외 활동에 큰 도움이 될 거라 생각하고. May 15,  · However, the most accurate method will likely involve the use of a formula derived from measurements of M&M's and their packing ratio (the percentage of space M&M's take up in a container).

During my research on the subject I found several derived formulae and many experiments completed by grade school students regarding the number of M&M's that will fit in a urbanagricultureinitiative.coms: An Experiment Determining the Acid Concentration on a White and Red Wine.

1, words.

Stoichiometry and the Gas Constant Experiment

10 pages. An Experiment on Determining an Amount of M&Ms Inside a Bag by Using the Method of Standard Addition. words. 5 pages.

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