eChapters

25.1. Aim

To estimate the ash content in fresh and processed products.

25.2. Theory and principle

Estimation of ash contents is important as it gives an idea about the presence of minerals in the food samples. Determination of ash is also required to evaluate fruit chutneys as the maximum limit for ash in this product shall not exceed 5% as per FPO specifications.

25.3. Apparatus/instruments/equipment

1. Crucibles

2. Muffle furnace

3. Sensitive balance

4. Heating plate

5. Desiccators

Katabatic Wind : Downslope gravitational flow of the colder, denser air beneath the warmer, lighter air results and comprises the katabatic wind. It is also known as the drainage wind or mountain wind.

Kelvin Temperature Scale : An absolute temperature scale in which the zero point is absolute zero. The scale is based upon the triple point of pure water and the size of the degree is same as on the celsius scale. So the 273.16 K = 0°C. That means the freezing point of water is 273.16 K and boiling point of water is 373.16 K, etc. This is more commonly called as the absolute.

Family: Bignoniaceae

Flowering: July-August

Fruiting: December-March

Botanical description: The plant is a medium sized deciduous tree, growing up to 8-12 m tall. The bark is grayish brown with corky lenticels. The leaves are huge, 0.5-1.5 m long, 2-3 pinnate with leaflets of 12 cm long and 8 cm broad. The flowers are reddish- purple outside and pale, -yellowish within, numerous, in large erect racemes. The fruits are flat capsules, 0.33-1 meter long and 5-10 cm broad, sword-shaped. The seeds numerous, flat and winged all around, except at the base.

3.1. Definition

Systems approach to reduce nematode to tolerable levels through predators and parasites, genetically resistant hosts, natural environmental modifications and appropriate nematicides.

Family: Oxalidaceae

Flowering: June-August

Fruiting: September-October

Botanical description: The plant is a creeping herb, branching from the base and often rooted at the nodes, the upper portion is ascending or weakly erect, smooth or hairy. The leaves are arranged alternately along the stems. A single long stalk arises from the axils of the leaf, from which extend three flower stalks, each with a single flower. The flowers are 7-11 mm wide and have 5 yellow petals. The fruit is a capsule, 1-1.5 cm long, cylindric, pointed apically, and 5-ridged in cross section.

Family: Rubiaceae

Flowering: August-September

Fruiting: September-October

Botanical description: The plant is a perennial twining climber, arising from a woody rootstock. Its stems grow up to 7 m or more, climbing, or prostrate and rooting at the nodes. Leaves are oval to linear-lanceolate, oppositely arranged, 2-11 cm long, hairy or smooth, often lobed at base with prominent stipules. Leaf stalks are mostly up to 6 cm long. Leaves and stems have a atinking smell, especially when crushed. Flowers are small, purple, broad or long, curving clusters at the end of branches or in leaf axils. Fruit is a shiny brown, nearly round capsule, up to 0.7 cm across, with 2 black, rounded seeds.

There are many bacteria and fungi which produce biofilms. These are made up of living, reproducing microorganisms. These microbes form communities and adhere tightly to the surfaces and are resistant to many antibiotics. Many pathogenic microorganisms form biofilms which are difficult to be removed and are harmful.Such microbial colonies produce an extracellular polymeric substance (EPS) to protect them. The dental plaque was the first documented evidence of microbial biofilms. When such microorganisms get a moist environment they attach themselves to any object and reproduce forming an attachment by secreting a slimy, glue-like substance. It is possible with metals, plastics, natural materials, medical implants, kitchen counters, contact lenses, walls of a hot tub or swimming pool. Initially it was the investigation of many scientists to show the presence of biofilms

Beneficial effects of biofilms have also been shown (Rosche et al., 2009) especially in agriculture (Bogino et al., 2013; Berlanga and Guerrero, 2016) where it can be utilized as a biological control agents. They are used as biofertilizers to enhance crop production (Timmusk et al., 2017), hazardous pollutants can be removed (Irankhah et al., 2019). 

20.1. Introduction
• The exchange of goods and services (trade) among countries across national boundaries is called as international trade.
• No Country can be self-sufficient in producing all the goods and services required by it.
• Thus, Countries need to trade to obtain commodities, they cannot produce themselves or they can purchase elsewhere at a lower price.
• The act of selling domestically produced goods to international consumer is known as exportation. India Export Refined Petroleum, Jewellery, Rice, etc.
• The act of purchasing goods from foreigne country in order to sell them domestically is known as importation. India import Crude oil, Coal, Gold, Electronics item etc.
20.2. Why International Trade?
• Countries cannot domestically produced all the goods and services that each individual consumer wants and needs.
• Because each country has different factor of production (Land, Labour, and Capital).
• Each country is endowed with different combination of these factors and therefore each country is capable of producing different combination of goods and services.
• When domestic production is greater than domestic demand for a good, excess production is traded on the international market

9.1 How to read a Balance Sheet

We know business is mainly concerned with the financial activities. In order to ascertain the financial status of the business every enterprise prepares certain statements, known as financial statements. Financial statements are mainly prepared for decision making purposes. But the information as is provided in the financial statements is not adequately helpful in drawing a meaningful conclusion. Thus, an effective analysis and interpretation of financial statements is required.

Analysis means establishing a meaningful relationship between various items of the two financial statements with each other in such a way that a conclusion is drawn. By financial statements we mean two statements:

Botany : Pea is a self pollinated crop. Time of anthesis is 5.45 to 6.30 AM. Time of dehiscence is 5.45 to 7.30 AM. Duration of pollen futility is on the day of anthesis to 24 hr there after. Duration of stigma receptivity is 48 hr before and 24 hr after anthesis.

Method of seed production : Var: Open pollination ; Hybrids: Emasculation and Pollination

Varieties / Hybrids

Early varieties : Arlcel, Matar Ageta 8, Early Badger, Pant Uphar, Hisar Harit, P.M. 2, Jawahar Matar 4, Meteor, Alaska, Lucknow Boniya, Pant Sabzi Matar 3, Pant Matar 2, VL Ageti Matar 7, Asauj.

Mid season varieties: Bonneville, Lincoln, VL 3, Shalimar Matar, Solan Nirog, Jawahar Matar 1, Pant Uphar, p88, Khapar Kheda, JP. 83, JP71, NP. 289, T19

Late varieties: Kinnauri

Family: Verbenaceae

Flowering: August-September

Fruiting: September-October

Botanical description: The plant is a prostrate, flowering and broadleaf herb. The leaves are opposite, obovate, serrate above middle, obtuse or rounded and thick. The flowers are small, in axillary peduncled and consists of a purple-coloured centre encircled by small white-to-pink flowers. Fruits are 2 mm long, enclosing two with 1-celled pyrenes.

Family: Fabaceae

Flowering: October-November

Fruiting: November-December

Botanical description: The plant is an annual, erect branched, glabrous herb growing upto 30-90 cm in height. Leaves are compound, leafelets are lanceolate, often doubly serrate, acuminate and sparsely puberulous both side with acute to rounded base. The flowers are 9-16 in number and arranged in umbellule, 1.5 mm across, with a pedicels 5 mm long. Fruit is ovate, slightly compressed laterally, glabrous with prominent ribs.

Bioagents like insects, pathogens etc., and other animals are used either to reduce growth or kill weeds.

But, not possible to eradicate weeds.

Introduction

Kokum, is native of the Western. Ghats in India, and Malaysia. In India it mainly grows in the western parts of Maharashtra, Karnataka, Kerala and Goa. It is found in evergreen and semi-evergreen forests and as a home garden tree. Kokum is an evergreen tree it is seldom planted in the form of an orchard and generally scattered trees are found in gardens and on waste lands.

Family: Fabaceae

Flowering: November-December

Fruiting: January-February

Botanical description: The plant is smooth, glaucous, annual herbaceous plant with foloaceous ovate stipules, irregularly toothed at the base. The leaflets are 2-3 pairs, opposite leaf-rachis ending in a branched tendril. The colour of the flower is white, peduncle is 1 and few flowered. Pods are broad with rounded, green or yellowish seeds.

Fruit firmness is an important indicator of maturity. During ripening, fruits may soften and become too soft at the overripe stage. The changes are detected by pressing the fruit in between hands or by using devices like a pressure tester or texture analyzer to measure the texture of fruits and vegetables. Commonly used pressure testers to measure the firmness of fruits and vegetables are the Magness–Taylor Pressure Tester and Penetrometer. Principle: For the measurement of pressure, the maximum force required to rupture the sample is measured by pushing a cylindrical metal probe into the sample to a given depth. The Magness-Taylor pressure tester can be used to determine the softening of fruits during maturity. In this instrument 10 lb or 30 lb force springs are available. Each of them is provided with one or two punches of 5/16 or 7/16 inch in diameter. The plunger of larger diameter is used on softer material, while; the smaller one is used for firmer material.
Procedure
1. Select the pressure tester according to type of fruit
2. Remove a thin portion of the skin in case of waxy fruits

Q₁₀ : The number of times the rate of a process (physical, chemical or physiological) increases with a 10^ºC increase in temperature. If the rate of the process is doubled Q₁₀ is 2. Q₁₀ for respiration is 2 to 3.

Quantum : Unit of energy emitted by a photon.

Quantum Flux Density : The number of quanta from a source, incident on a unit area of a small surface situated in a perpendicular direction.

Quantum Irradiance : The number of quanta from a source incident on a unit area of a surface. This differs from the ‘quantum flux density’ as far as direction is concerned.

Chemistry of Alkanes

In living plants, hydrocarbons are universally distributed in the waxy coatings on leaves and other plant organs. Alkane fraction is commonly a mixture of hydrocarbons of similar properties. The qualitative pattern is relatively similar from plant to plant, but there are considerable quantitative variation. Alkanes are saturated long chain hydrocarbons. They are usually present in the range of C to C carbon atoms. Examples are n-nonacosane, C H and n-hentriacontane, C C . In general, odd-numbered carbon chains occur predominantly in the cuticular wax of plants and are substantially indigestible.

How alkanes are “user friendly” !

Following are some points to ponder :

• Alkanes are long carbon chains found naturally in plants and each plant species has its unique compliment of these different alkanes which act like “fingerprints”. Forage intake can be estimated from ‘faecal grab samples’, if the ratio between these endogenous plant alkanes and exogenous alkanes delivered from “a rumen slow - release gelatin capsule” is calculated.

• Alkanes can also be used for determiningdigestibility and characterizing thespecies compositionof thediet, makingalkanes an extremelypowerful tool for dairy research.

• Anenexpensive, reliable and simpletechnique offers tremendous potential for research in the area of low cost dairy production from forages. Such data may be used by “slow–release marker” to estimate intake and digestibility.

• Alkanes offer a potentially simple technique for the animal scientist and it is feasible to estimate alkane concentrations using Near Infra-Red scanning [N.I.R.]. It is a rapid analytical method, thus making alkane technology an extremely ‘user friendly’ tool to be widely adopted on behalf of the dairy industry.

Family: Lamiaceae

Flowering: September-October

Fruiting: November-December

General Characters: The plant is a small, erect, fleshy, annual herb, growing up to 30-50 cm high. The leaves are oppositely arranged, broadly ovate, 5-12 cm long, pointed, heart- shaped at base, with a toothed margin. Flowers are pale blue in colour, borne in branched racemes, 7-20 cm long, at the end of branches. Fruits are round, 2-3 mm, gery brown, with sparse small dark warts.

Introduction

Longan is a close relative of lychee, having similar growth and fruiting habits but being somewhat hardier than lychee. The fruits are smaller, smooth-surfaced with a yellow to brown colour. It originated in the subtropical region of China or in the area between Myanmar and India. Fruits contain 25.2% carbohydrate, 1% protein, 0.5% fat, vitamin A (28 IU/100G) and vitamin C. Longan contributes to the greatest fruit export of Thailand. Longan/Lungan, also known as “Dragon’s Eye” or “Little Brother of Lychee”, is an important sub-tropical fruit crop.