Evolution of mechanical characteristics of tomatoes of two varieties during ripening
Evolution of mechanical characteristics of tomatoes of two varieties during ripening
复制标题
两个品种番茄成熟过程力学特性的演变
DOI：
10.1002/jsfa.2740620211
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发表时间：
1993
影响因子：
4.1
通讯作者：
K. Ramana
中科院分区：
文献类型：
--
作者：
R. Thiagu;Nagin Chand;K. Ramana
对两个番茄品种（Pusa Ruby
和Vashali杂种）在成熟的各个阶段进行了研究，
压缩（WFCT）和Magness-Taylor渗透（MTPT）试验，
Instron通用试验机，型号1 140。破裂/穿透力，
计算了断裂/穿透时的变形、刚度和所做的功
从WFCT和MTPT的各个力-变形曲线，
两个品种的成熟阶段。所有参数，除了变形，
在WFCT下的破裂，表现出非常显着的变化与成熟。的
两个品种的果实在所有参数上都表现出显著差异，
除了硬度。Vashali杂交种的番茄更结实
在所有成熟阶段需要20- 50%的额外力来破裂/刺穿
与Pusa Ruby相比。侵彻变形增加了4倍
更迅速，成熟，为Pusa红宝石相比，Vashali杂交。
破膜期后，Pusa红宝石果实需要更多的能量（功）用于穿透
因为大部分能量都花在变形而不是刺穿上。的
当用线性近似时，压缩功或渗透功估计过高
力变形曲线在99.9%水平上显著。除了变形
根据WFCT（用于Vashali混合动力车）和MTPT（用于Pusa）所做的工作
Ruby），所有其他参数之间均显示出良好的相关性。
经验选择的逆和幂律模型充分描述了
大多数参数随成熟指数的变化，两个模型都是
同样适用于该目的。
Mechanical characteristics of tomatoes of two varieties (Pusa Ruby
and Vashali hybrid) were studied at various stages of ripening by whole fruit
compression (WFCT) and Magness-Taylor penetration (MTPT) tests on an
Instron Universal Testing Machine, Model 1 140. Rupture/penetration force,
deformation at rupture/penetration, stiffness, and work done were computed
from the respective force-deformation curves for WFCT and MTPT for various
ripening stages of both varieties. All the parameters, except deformation at
rupture under WFCT, showed highly significant variations with ripening. The
fruits of both varieties showed significant differences in all parameters obtained by
WFCT except in stiffness. The tomatoes of the Vashali hybrid were firmer
requiring 20-50 % extra force to rupture/puncture at all stages of ripening
compared with Pusa Ruby. The deformation at penetration increased four times
more rapidly, with ripening, for Pusa Ruby compared with the Vashali hybrid.
After breaker stage, Pusa Ruby fruits required more energy (work) for penetration
as most of the energy was spent in deformation rather than puncturing. The
overestimate of work of compression or penetration when approximated by linear
force deformation curve was significant at the 99.9 % level. Except for deformation
under WFCT (for the Vashali hybrid) and work done under MTPT (for Pusa
Ruby), all the other parameters showed good correlations between them.
Empirically selected inverse and power law models adequately described the
variation in most of the parameters with ripening index and both the models were
equally suited for the purpose.